United States v. Casey , 825 F.3d 1 ( 2016 )


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  •            United States Court of Appeals
    For the First Circuit
    No. 13-1839
    UNITED STATES,
    Appellee,
    v.
    LASHAUN CASEY,
    Appellant.
    APPEAL FROM THE UNITED STATES DISTRICT COURT
    FOR THE DISTRICT OF PUERTO RICO
    [Hon. Aida M. Delgado-Colón, U.S. District Judge]
    Before
    Thompson, Hawkins,* and Barron,
    Circuit Judges.
    Linda Backiel on brief for appellant.
    Mariana E. Bauzá, with whom Rosa Emilia Rodríguez-Vélez,
    United States Attorney, Nelson Pérez-Sosa, Assistant United States
    Attorney, Chief, Appellate Division, Thomas Klumper, Assistant
    United States Attorney, Senior Appellate Counsel, and Susan Z.
    Jorgenson, Assistant United States Attorney, were on brief for
    appellee.
    *   Of the Ninth Circuit, sitting by designation.
    June 3, 2016
    HAWKINS,   Circuit    Judge.   Lashaun   Casey   appeals   his
    conviction by jury trial and life sentence for the death of an
    undercover police officer during a drug buy.       His appeal raises a
    host of challenges to rulings issued throughout his pretrial and
    trial proceedings, and urges he be granted a retrial.          For the
    reasons described in the opinion that follows, we affirm.
    I.    Background
    A. Facts
    The overarching series of events giving rise to this
    appeal are not in dispute.      Contested issues pertinent to Casey's
    arguments on appeal, and the appropriate standard of review for
    each, are addressed in the Discussion sections below.        While the
    record is brimming with numerous additional details, we keep our
    synopsis relevant to the questions we have been asked to consider.
    In 2005, Puerto Rico Police Department ("PRPD") Agent
    Jesús Lizardi-Espada ("Lizardi") was assigned to investigate Casey
    undercover.     He eventually arranged with Casey's assistance to
    purchase four pounds of marijuana on the island of Culebra in the
    morning hours of August 1, 2005, from the drug supplier Alexander
    Hernández.    Lizardi and Casey were to drive to Fajardo, from where
    they would take a ferry to Culebra to meet Hernández.            A law
    enforcement team led by Lizardi's supervisor, Agent José Agosto-
    Rivera ("Agent Agosto"), traveled to Culebra by plane to await
    Lizardi and Casey's arrival.
    -3-
    When Agent Agosto did not see Lizardi and Casey arrive
    on the ferry as planned, a search for Lizardi commenced. Later
    that day, Agent Agosto found Casey at his workplace, a Holiday Inn
    in Isla Verde, and spotted Lizardi's gray Ford truck in the hotel
    parking lot.       Upon leaving the Holiday Inn in Lizardi's truck,
    Casey was arrested and taken to PRPD general headquarters, where
    he was read his rights, signed a Miranda waiver, and began being
    questioned.    Casey, who remained in PRPD custody until midday the
    following day, was moved to a PRPD precinct in Canóvanas and later
    to one in Luquillo.       At some point, Casey told officers he was no
    longer interested in talking with the police.
    While Casey was in PRPD custody, Casey's grandparents
    Mr. and Mrs. Rivera, with whom he lived, permitted law enforcement
    officers to search his bedroom without a warrant.          In it, the FBI
    discovered a loaded firearm inside a jacket pocket, Lizardi's cell
    phone,   and   a   pair   of   blood-stained   flip   flops.   Casey   was
    subsequently transferred from PRPD to FBI custody in Ceiba, where
    he was confronted with this evidence, and in the course of further
    questioning, requested an attorney.       It was there that his common-
    law wife, Crystal Peña ("Peña"), came to visit him.            Statements
    Casey made to her during their exchange were overheard by law
    enforcement, and later admitted as evidence against him.
    Further investigation revealed that on the morning of
    August 1, 2005, Luis Algarín ("Algarín"), a cashier working at the
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    marina parking lot in Fajardo from which ferries to Culebra depart,
    witnessed a person he later identified in a photo array as Casey
    drive up to his booth in a gray truck, request to leave after
    losing his parking lot ticket, and pay with a twenty-dollar bill.
    Another parking lot employee, Peter Ávila-Natal, also observed on
    that same day in the lot a pick-up truck missing a driver's side
    window, and glass dust on the truck driver's elbow.             The FBI
    recovered from the Fajardo parking lot a car window with what
    appeared to be a bullet hole in the middle, and a projectile which
    was later matched to the gun found in Casey's bedroom.
    Law    enforcement     procured   a   warrant   and   searched
    Hernández's residence.     A cadaver dog, trained to help locate
    decomposing bodies, gave alerting signals both inside and outside
    the residence.     Officers questioned Hernández and seized several
    items, including a pair of muddy boots, pants, a glove, soil
    samples, and floor mats, from the premises.
    Lizardi's backpack was then discovered in Luquillo, down
    the road from Hernández's home, at a location also just a mile
    from where Casey lived.        It contained clothes and a towel with
    hair on it that law enforcement concluded was not Casey's, although
    no tests were conducted to ascertain whose hair it was.           A few
    days later, Lizardi's body was also found in Luquillo, down a hill
    in a wooded area behind an abandoned structure that contained
    traces of blood.    FBI analysis identified DNA from swabs taken of
    -5-
    the abandoned structure, Lizardi's truck, the twenty-dollar bill
    from    the    parking       lot,   and   the    blood-stained       flip-flops,      as
    Lizardi's.
    B. Procedural History
    In February 2007, a grand jury returned a three-count
    indictment charging Casey with (1) carjacking with the intent to
    cause death or serious bodily injury (18 U.S.C. § 2119(3)); (2)
    possession, use, discharge, carrying of firearms during a crime of
    violence resulting in another's death (18 U.S.C. § 924(j)); and
    (3)    being    a    felon    in    possession    of   a   firearm    (21    U.S.C.   §
    922(g)(1)).         Casey pleaded not guilty on all counts.                 That July,
    the government filed a notice of intent to seek the death penalty.
    Pretrial proceedings took place over six years, mostly
    concerning the death penalty. Suppression motions were heard in
    the fall of 2011 and rulings issued in January 2013.                    Casey moved
    to suppress the evidence discovered in his bedroom on the ground
    that his grandparents had neither actual nor apparent authority to
    consent to the warrantless search, arguing the search was unlawful
    and the evidence it yielded inadmissible.                  Finding that the room
    routinely remained unlocked and that Casey's grandparents had
    permission to enter it on a regular basis, the district court
    denied this motion.           Casey also moved to suppress Algarín's photo
    array identification from the Fajardo parking lot; statements
    elicited from him allegedly in violation of his Miranda rights;
    -6-
    words he exchanged with his wife while in custody; and photos of
    Lizardi's decomposing body.      These motions were denied as to all
    but certain statements the district court concluded Casey made
    after invoking Miranda protections.
    In September 2012, the district court held a hearing on
    ethical misconduct allegations lodged by the government against
    defense counsel.       Casey's subsequent motion to disqualify the
    district court judge based on claims of impartiality and improper
    ex parte communication with the government was denied.
    Juror   questionnaires     were   completed    in   October   and
    November 2012.      Voir dire was held in February 2013.        The district
    court   rejected    Casey's   Batson   challenge   to     the   government's
    peremptory strikes of three black panelists.        Trial then commenced
    in March.
    Casey argues that a number of erroneous rulings at trial
    amounted to a violation of his right to confrontation and to
    present a defense.      In particular, he contends it was improper to
    preclude evidence which would have shown that the PRPD declined to
    properly investigate the possible involvement of Hernández, the
    dealer with whom the August 1, 2005, drug buy had been arranged,
    in Lizardi's death.        The subject of such purported evidence
    included a PRPD internal investigation into its own possible
    negligence in the planning and execution of Lizardi's undercover
    operation.
    -7-
    After nine days of trial, the jury returned a verdict of
    guilty as to all counts but rejected the death penalty.          A judgment
    of conviction was entered on June 13, 2013, and Casey was sentenced
    to life in prison.    This appeal followed.
    II.     Discussion
    A. Prosecution's Use of Peremptory Challenges
    Casey, a black American transplant from Brooklyn to
    Puerto Rico, argues the district court erred in finding no equal
    protection violation in the government's exercise of peremptory
    challenges to exclude three black persons from the jury, he claims,
    solely on the basis of race.
    1.    Batson Challenge
    In Batson v. Kentucky, the Supreme Court reaffirmed the
    longstanding   principle      that     a    criminal   defendant's    equal
    protection rights are violated when jury selection at his trial is
    "affected by invidious racial discrimination."             United States v.
    Girouard, 
    521 F.3d 110
    , 112 (1st Cir. 2008).           The "[e]xclusion of
    black   citizens     from    service       as   jurors,"   stated    Batson,
    "constitutes a primary example of the evil the Fourteenth Amendment
    was designed to cure."      Batson v. Kentucky, 
    476 U.S. 79
    , 85 (1986).
    While Batson initially focused on whether the defendant or an
    excluded juror was part of a cognizable racial group, subsequent
    cases broadened Batson doctrine to encompass an individual juror's
    right not to be discriminated against -- making the relevant query
    -8-
    whether "a peremptory challenge was based on race."    See Sanchez
    v. Roden, 
    753 F.3d 279
    , 292 (1st Cir. 2014) (quoting Snyder v.
    Louisiana, 
    552 U.S. 472
    , 476 (2008)).
    Batson outlined a three-part burden-shifting framework,
    a "Batson challenge," through which a defendant can dispute the
    government's use of peremptory strikes as racially motivated and
    demonstrate an equal protection violation.   See Foster v. Chatman,
    No. 14-8349, 
    2016 WL 2945233
    at *8 (U.S. May 23, 2016).        The
    defendant is required to first make a prima facie showing that
    race formed the basis for a peremptory challenge.   The trial court
    must consider all relevant "circumstantial and direct evidence of
    intent as may be available" to determine whether an inference of
    racial motivation may be drawn.      
    Batson, 476 U.S. at 93
    , 96
    (quoting Arlington Heights v. Met. Hous. Dev. Corp., 
    429 U.S. 252
    ,
    266 (1977)).   For instance, a "pattern" of strikes against black
    jurors, a "prosecutor's questions and statements during voir dire
    examination and in exercising his challenges," 
    Sanchez, 753 F.3d at 292
    (quoting 
    Batson, 476 U.S. at 97
    ), or the light a later
    strike may shed on an earlier one, can support an inference of
    discriminatory purpose, 
    Snyder, 552 U.S. at 478
    (noting that
    persisting doubt as to a particular strike requires the court to
    consider another strike for the bearing it might have on the
    previous challenge); United States v. Charlton, 
    600 F.3d 43
    , 55
    (1st Cir. 2010) (Lynch, C.J., concurring) (noting that seemingly
    -9-
    permissible individual strikes may need "a second look" if, when
    taken together, they "create a concern that certain groups are
    underrepresented").
    If the defendant makes out a prima facie case, the burden
    then shifts to the prosecution to offer an explanation for striking
    the juror in question.     The proffered explanation must not only
    be racially neutral, but also "related to the particular case to
    be tried."    
    Sanchez, 753 F.3d at 292
    -93 (quoting 
    Batson, 476 U.S. at 98
    ).    Finally, based on these showings, the trial court must
    decide    whether   the   defendant     has     demonstrated        purposeful
    discrimination.     Miller–El v. Cockrell, 
    537 U.S. 322
    , 328-29
    (2003).
    Statistical    evidence    is      frequently     used    to   show
    impermissible discrimination.    Courts look to the percentage of a
    particular racial group removed from the venire by the strikes at
    issue, and the percentage of strikes directed against members of
    that group.    Aspen v. Bissonnette, 
    480 F.3d 571
    , 577 (1st Cir.
    2007).    A prosecutor's intent may also be discerned by comparing
    the treatment of white and non-white panelists.            An instance where
    a prosecutor's stated reason for striking a non-white potential
    juror would apply to a white panelist who was permitted onto the
    jury could serve as evidence of purposeful discrimination at the
    final step of a Batson challenge analysis.          Miller-El v. Dretke,
    
    545 U.S. 231
    , 241 (2005); 
    Aspen, 480 F.3d at 577
    .
    -10-
    Here, the district court did not specifically find, but
    rather assumed, that Casey satisfied his burden at Batson's first
    step to show a prima facie case of discrimination.          According to
    Casey, however, the district court nevertheless committed clear
    error at the third step by accepting at face value the prosecutor's
    race-neutral explanations, rather than offering the defense an
    opportunity to expose the explanations as pretextual.            While we
    conclude a Batson error was in fact committed here, because the
    error was without doubt harmless, we affirm.
    2.   Standard of Review for Batson Challenge Ruling
    We review a district court's factual determination that
    the government was not motivated by race for clear error, and may
    reverse only where we arrive at a "definite and firm conviction
    that a mistake has been committed."        United States v. González-
    Meléndez, 
    594 F.3d 28
    , 35 (1st Cir. 2010); 
    Charlton, 600 F.3d at 50
    . We are mindful that only the trial court observed first-hand
    "the demeanor of the attorney who exercise[d] the challenge, along
    with whether [each stricken panelist's] demeanor can credibly be
    said to have exhibited the basis for the strike."           United States
    v. Mensah, 
    737 F.3d 789
    , 796 (1st Cir. 2013) (internal quotation
    marks omitted).
    3.   Voir Dire
    The jury pool contained 457 individuals, 13 of whom self-
    identified   as   black,   4   as   black/Hispanic,   and   1   as   Puerto
    -11-
    Rican/black (18 total black).           The rest of the pool contained 256
    Hispanic/Latino           persons,           30        Caucasian,             58        no
    answer/unrecognizable, and small numbers of other race/ethnicity
    combinations.       Of the 18 panelists who self-identified as black,
    13 were not called or were excused at parties' stipulation.                              Of
    the remaining 5, Casey and the government each struck 2 and 1 was
    chosen as an alternate.
    The   2   self-identified        black    jurors        stricken      by   the
    government were numbers 182 and 354.1                  Casey moved to reinstate
    those two.    He also moved to reinstate stricken Juror 175, who had
    not   self-identified        as    black,    but    rather      as    "Latin."       Casey
    nevertheless       himself   claimed    this       potential     juror       was   black,
    arguing    that     she   appeared     dark-skinned,         spoke      in    a    manner
    consistent with being black, and was Brooklyn-born.
    The government responded that these three jurors were
    stricken     not    for   race-based        reasons,      but   because       they      had
    demonstrated they were incapable of serving on the jury in a death
    penalty-eligible       case.      Specifically,      it   stated       all   three      had
    indicated an unwillingness to apply the death penalty according to
    the law or in the facts of the instant case, even if the government
    could prove them true.
    1 Jurors 182 and 354 had identified themselves as "black" and
    "black Hispanic," respectively.
    -12-
    Crediting the government's race-neutral explanations for
    its peremptories, the district court denied Casey's challenge.           It
    held that because Juror 175 had not self-identified as black, Casey
    failed to make a prima facie case of purposeful discrimination;
    but that even if she was black, "she expressed reluctance to apply
    the death penalty in cases where the victim was not a child,
    elderly, or otherwise a defenseless victim."            As for Juror 182,
    who self-identified as "Catholic (Black)," the district court
    looked to his statement on his questionnaire and at voir dire that
    the death penalty "is inhuman."             Finally, with regard to Juror
    354, who first identified as Hispanic and later modified this to
    "Hispanic black," the district court concluded the government's
    peremptory strike was not racially motivated because her response
    to a hypothetical in which a defendant killed an unarmed law
    enforcement officer was that life in prison, not the death penalty,
    would be the appropriate punishment; Juror 354 did, however, say
    she could take into account other aggravating factors to consider
    the death penalty.
    4.   Discussion
    There was no clear error in rejecting Casey's Batson
    challenge on its merits.         The district court was not convinced
    Casey made out a prima facie case, but nevertheless assumed as
    much,   and    proceeded   to   reject   Casey's   challenge   at   Batson's
    subsequent steps.
    -13-
    This was fortunate because the record demonstrates a
    Batson error was in fact committed here, and we would be remiss
    not   to   address   it    even   though   it   changes   little    for   Casey.
    Specifically, the parties and the district court labored under the
    misimpression that the defendant must be of the same race as the
    stricken juror in order to raise a Batson challenge.               The district
    court even denied one of Casey's challenges on this very basis.
    This runs afoul of Powers v. Ohio.            
    499 U.S. 400
    , 402 (1991) ("[A]
    criminal defendant may object to race-based exclusions of jurors
    effected    through       peremptory   challenges     whether      or   not   the
    defendant and the excluded juror share the same races.").
    The error was, nevertheless, harmless.              Casey, whose
    Batson challenge was based almost entirely on numbers alone,
    stresses that the prosecution's use of 3 of its 14 peremptory
    challenges on blacks "strongly suggests that something more than
    chance was at work."         But the venire contained very few persons
    who self-identified as black to begin with, especially after the
    various excusals and stipulated dismissals.               This is materially
    different from where "the numbers are larger and the pattern is
    inescapably apparent."        
    Mensah, 737 F.3d at 801
    .
    Casey's arguments on appeal misstate the statistics at
    the crux of his argument.         For instance, he claims the government's
    use of the 3 of its 14 peremptories against black prospective
    jurors constituted 42 percent of its peremptories; the actual
    -14-
    figure is 21 percent.      He also asserts that 6.3 percent of the
    prospective jurors called for individual voir dire were black (14
    out   of   222);   but   he   does   not   contest   the   government's
    representation that 18 individuals out of the entire 457-person
    venire pool self-identified as "Black or mixed Black race" –- which
    comes out to 3.9 percent of the pool.        And just 3.7 percent of
    that pool (12 regular jurors and 5 alternates, 17 altogether out
    of the 457-person venire) made it onto the jury.           "Thus, as is
    common, the numbers considered in isolation are inconclusive in
    determining whether [Casey] met his burden on step one."       
    Sanchez, 753 F.3d at 303
    (quoting 
    Mensah, 737 F.3d at 802
    ).
    Casey's attempts to compare the opinions about the death
    penalty shared by stricken panelists and non-black venirepersons
    are also to no avail.     First, he made no such argument before the
    district court.    And on appeal, he declined to place it in his
    opening brief (which instead focuses on faulting the government
    for failing to strike other non-black jurors who were in favor of
    the death penalty).      Only in his reply brief does he attempt to
    liken opinions of two stricken black panelists with those of non-
    black persons who were permitted to serve on the jury.         Not only
    are arguments raised for the first time in an appellate reply brief
    ordinarily deemed waived, United States v. Eirby, 
    515 F.3d 31
    , 36
    n.4 (1st Cir. 2008), the evidence underlying these arguments is
    hardly conclusive and would not pass the rubric of plain error
    -15-
    review which applies to contentions raised for the first time on
    appeal, United States v. Matos, 
    611 F.3d 31
    , 35 (1st Cir. 2010).2
    Against Casey's scant evidence of discriminatory intent,
    we see no reason, nor do we see evidence in their questionnaires
    or   voir   dire    testimony,     to     question    the    legitimacy   of   the
    government's proffered reasons for doubting the three jurors'
    abilities to impose the death penalty in accordance with the law,
    described above. Finally, it is simply untrue that the district
    court   denied     Casey    an   opportunity     to   argue    the   government's
    explanations for its strikes were pretextual.                  Casey's attorney
    did respond to the government's justifications for its strikes,
    simply stating that the reasoning offered "was not a valid basis
    to strike jurors."         Had Casey wished to share additional arguments
    concerning pretext, he declined his chance to do so.
    Finding        no     clear        indications      of     purposeful
    discrimination in the record, we affirm the rejection of Casey's
    Batson challenge.
    2 For instance, while Juror 177 did, like Juror 354, express that
    the death penalty should be virtually automatic in cases involving
    the murder of a child or elderly person, Juror 177 circled "1" on
    a 1-10 scale on favor for the death penalty, 1 being the most
    strongly in favor of the death penalty a respondent could be. Juror
    354, by contrast, circled "5," reflecting she was undecided.
    -16-
    III. Fourth Amendment Challenge to Casey's Bedroom Search
    Casey claims    error in        the denial of        his motion to
    suppress       evidence    seized     from    his    bedroom    located     in    his
    grandparents' home, because, he argues, the search was made without
    proper consent.
    A.     Third-Party Consent to Warrantless Searches
    The search of a person's home conducted in the absence
    of   a    warrant    issued    upon     probable      cause    is    presumptively
    unreasonable, but may be deemed permissible with valid consent.
    United States v. Vázquez, 
    724 F.3d 15
    , 18 (1st Cir. 2013).                          A
    prosecutor who seeks to rely on the lawfulness of a search bears
    the burden to show the consent was "freely and voluntarily given."
    Bumper    v.    North     Carolina,    
    391 U.S. 543
    ,     548   (1968).        The
    voluntariness of a consent to search turns on an assessment of the
    totality of the circumstances.               United States v. Mendenhall, 
    446 U.S. 544
    , 557 (1980).         "Among the individualized factors bearing
    on the vulnerability of the consenting party are age, education,
    experience, intelligence, and knowledge of the right to withhold
    consent."       United States v. Barnett, 
    989 F.2d 546
    , 555 (1st Cir.
    1993).
    Consent is legally unavailing if given by a person who
    does not have authority to do so.             The consent of one who possesses
    "common    authority"       over    premises    or   effects,       or   some    other
    -17-
    sufficient relationship to the premises or effects, is valid as
    against the absent, nonconsenting person with whom that authority
    is shared.    Schneckloth    v. Bustamonte, 
    412 U.S. 218
    , 245-46
    (1973).
    Common authority is not, however, to be implied from the
    mere property interest a third party has in the property.       See
    Stoner v. California, 
    376 U.S. 483
    , 487-88 (1964) (finding the
    warrantless search of a hotel room by consent of the hotel clerk,
    absent the guest's consent, unlawful); Minnesota v. Olson, 
    495 U.S. 91
    , 96-97 (1990) (finding that a defendant's status as an
    overnight guest in the upper unit of a duplex home was sufficient
    for him to claim a protected privacy interest in the premises,
    even though he was not given a key or left alone in the unit, and
    did not pay for his stay).
    Rather, common authority arises from having a shared
    privacy interest in the premises or effects to be searched.   United
    States v. Matlock, 
    415 U.S. 164
    , 171-72 (1974) (reasoning that
    through mutual use -- as opposed to mere joint access -- of the
    subject property, all co-inhabitants have assumed the risk that
    one among them might permit a search of their shared space); United
    States v. DiPrima, 
    472 F.2d 550
    , 551 (1st Cir. 1973) (finding
    search of defendant's room in his mother's house at the mother's
    consent lawful, where his younger brother shared the room and his
    -18-
    mother used the room's closet, and defendant was present upon
    officers' entry of the room and made no objection).
    Yet, even where a party who gave consent did not have
    authority to do so, a search is not unlawful if the searching
    officer had a mistaken -- but objectively reasonable -- belief the
    party    in    fact   had   the   requisite    authority.   Thus   "when   the
    invitation is accompanied by an explicit assertion that the person
    lives there," the relevant question is whether "the surrounding
    circumstances could conceivably be such that a reasonable person
    would doubt its truth and not act upon it without further inquiry."
    Illinois v. Rodriguez, 
    497 U.S. 177
    , 188-89 (1990) (finding search
    lawful due to "apparent authority," where a former co-tenant of
    the defendant suggested to police she lived there, calling it "our
    apartment," and used her key to bring them inside, where they found
    the defendant with drug paraphernalia and cocaine).
    B.       Standard of Review
    This court reviews the ruling on suppression de novo,
    accepting       its   underlying     factual    findings    unless   clearly
    erroneous.       United States v. Wurie, 
    728 F.3d 1
    , 2–3 (1st Cir.
    2013).    The issue of consent to search is reviewed de novo.         United
    States v. Schaefer, 
    87 F.3d 562
    , 565 (1st Cir. 1996).
    -19-
    C.    Background
    The parties agree that the day after Casey's arrest and
    while he was in custody, PRPD and FBI agents obtained consent from
    Casey's grandparents, the Riveras, to search Casey's bedroom in
    their house, where Casey had resided since 2002.                    PRPD agents
    found the room door open, and taped it off upon arrival to preserve
    the room for the FBI to inspect.
    The district court was faced with conflicting testimony
    from Mr. Rivera, on the one hand, and Agent Marrero and Lieutenant
    Nazario of PRPD and FBI Special Agent Villareal, on the other.                   It
    decided to afford "more credence to the testimony provided by [the
    officers than by] Rivera."            In doing so, it reasoned that Mr.
    Rivera had contradicted himself about his employment status and
    admitted he had illegally avoided paying taxes, and further that
    while Mr. Rivera had motive to lie to protect his grandson, the
    testifying officers had no similar stake in the case.
    At the suppression hearing, Mr. Rivera testified that
    the room was used only by Casey and contained only his personal
    belongings; that Casey paid rent whenever he was working; that the
    door   had    a   lock   and   Mr.   Rivera   had   a   key   to   use   only   for
    emergencies; that Casey had told his grandmother Mrs. Rivera she
    could not enter the room, even to clean, and once moved out because
    -20-
    she had entered for housekeeping purposes; and that the officers
    made him nervous.
    Agent   Villareal's   rebuttal    testimony   portrayed    the
    situation quite differently.     On the stand, he first recounted his
    conversation   with   Mr.   Rivera,   who   appeared   "comfortable   and
    cooperative," and "wholeheartedly agreed" to an FBI search of the
    house.   According to Agent Villareal, Mr. Rivera said Casey "could
    not afford to maintain his own household and provide his own food,"
    so he received lodging and food "for free" with the Riveras.         Agent
    Villareal further recalled that, when asked whether Casey lived in
    a specific room of the house, Mr. Rivera responded that Casey
    indeed resided in a room in the "posterior part of the house."
    Its "door did not have a lock," said Mr. Rivera, and both Riveras
    "had free access to the room at all times, since it was their
    residence."    Agent Villareal's testimony then shifted to his
    conversation with Mrs. Rivera, who provided him with aligning
    information.   She told Agent Villareal that Casey "did not have
    enough income . . . to support himself and had to live with [the
    Riveras] . . . rent free and was provided food by [the Riveras]."
    Mrs. Rivera also said to Agent Villareal that Casey's room "did
    not have a lock" and she "was free to come and enter at will."
    Agent Marrero, who arrived at the Rivera home before the
    FBI, similarly testified that when she got there, Mrs. Rivera said
    -21-
    she had "no problem" with Agent Marrero's presence, or the search
    of the residence to which Mr. Rivera had given consent at the
    police station.   Agent Marrero further recalled finding the door
    to Casey's room open, and taping it off to preserve evidence while
    she waited for the FBI to arrive.       When Agent Marrero asked who
    could go into and use the room, Mrs. Rivera replied, "[o]nly the
    three of them."
    While Agent Nazario did not specifically recall Mr.
    Rivera's response about who could enter the room, he, like the
    other agents, testified that Mr. Rivera readily offered consent
    and gave Agent Nazario no reason to believe he lacked authority to
    do so.   "[O]n the contrary," testified Agent Nazario, "Mr. Rivera
    always identified himself as the owner of the house and as the one
    who can authorize [a search]."     Agent Nazario furthered that Mr.
    Rivera "represented himself to be . . . the one that ordered people
    around there."
    In   deeming   the   search   lawful,   the    district   court
    emphasized heavily that Casey's grandparents cooperated fully with
    the search, readily giving both oral and written consent, and
    expressed no hesitation or lack of authority.           It, in addition,
    relied on the law enforcement officers' testimony to conclude that
    Casey did not pay rent and did not lock his door, and that the
    -22-
    Riveras "had joint access to [Casey's] bedroom."3            The district
    court concluded that Casey's grandparents had both actual and
    apparent authority to consent to the search of Casey's room.
    D.   Discussion
    Casey argues that his grandparents did not have the
    requisite authority to consent to the search.         He bases this solely
    on Mr. Rivera's on-the-stand statements, which differ materially
    from what the Riveras told officers prior to the search at the
    Rivera home.       Indeed, the law enforcement officers recount that
    the Riveras affirmatively indicated they could freely enter and
    exit the room and treated it as a part of their home, and never
    once did the Riveras do or say anything to suggest otherwise.
    There was no clear error in giving greater credence to
    the three agents' testimony than to Mr. Rivera's.             While their
    statements do differ materially from Mr. Rivera's assertions on
    the stand, the district court offered reasoning to back up its
    determination: "Rivera . . . has close ties to defendant . . .
    [and] may have been inclined to [protect] his grandson by providing
    testimony .    .    .   inconsistent   with   the   information    which   he
    previously gave to law enforcement agents . . . ."                Mr. Rivera
    3 The district court     also found that the Riveras "entered [Casey's]
    room regularly."          Casey challenges this finding as clearly
    erroneous. We need       not resolve his challenge, as we do not rely
    on this finding for      our holding.
    -23-
    changed his tune between the time the officers asked to search
    Casey's room -- when he readily shared that he had full access to
    the room and authority to consent to its search –- and the moment
    he took the stand at the suppression hearing.                That Mr. Rivera
    contradicted himself about his employment status provided further
    reason to discredit his on-the-stand statements.
    The question is thus whether the district court was
    correct that the officers' testimony established that the Riveras
    had common authority to consent to the search of Casey's bedroom.
    The officers appear to have asked the Riveras very few questions.
    We encourage law enforcement officers in the future to obtain
    sufficient facts about a given living situation to not only give
    them the ability to assess the validity of third-party consent
    before initiating a search, but also to allow a reviewing court to
    make an assessment in the event that consent is later challenged.
    Nevertheless, the facts that the officers had before
    them at the time of the search gave them sufficient reason to
    believe that the Riveras had full "run of the house," see United
    States   v.    Clutter,   
    914 F.2d 775
    ,   777   (6th   Cir.   1990),   and
    concomitant authority to permit the search.            The facts before the
    officers -- that the door to Casey's room was unlocked and open,
    that Casey did not contribute to rent or food, that Mrs. Rivera
    could enter the room "at will," and that Mr. Rivera "ordered people
    around" at the house and "had free access to the room at all
    -24-
    times" -- permitted the officers to infer that there was an
    arrangement in the residence that the Riveras could enter Casey's
    room if and when they wished.            The Riveras' statements at the time
    of    the   search     about    their    access    to    the    room    suggested     a
    relationship a reasonable person could conclude is more akin to
    that between co-tenants, see 
    Rodriguez, 497 U.S. at 179-80
    , than
    that between a hotel clerk and guest, see 
    Stoner, 376 U.S. at 488
    .
    We thus agree with the district court that the Riveras had apparent
    authority to consent to the search, and we do not reach the
    question whether the Riveras had actual authority as well.
    In so holding, we note that the facts of this case are
    different from those in United States v. Whitfield, 
    939 F.2d 1071
    (D.C. Cir. 1991), one of the cases on which Casey relies.                             In
    Whitfield, the court held that a mother did not have apparent
    authority to consent to the search of her adult son's room.                          
    Id. at 1075.
        But there was no evidence that the mother said, as Mrs.
    Rivera did here, that she could come and go from her son's room
    "at will."       Nor did Whitfield involve evidence that the mother
    represented herself to be the one who "ordered people around" at
    the house, as Mr. Rivera did.            The court in Whitfield assumed that
    the   officers    in    that    case    could    infer   only    that    the    mother
    "generally"      had   "joint    access"    to    the    room,   and    so     had   the
    "ability" or "legal right, to enter" that room, 
    id. at 1074
    -- an
    inference that seemed to rest on little more than the facts of her
    -25-
    ownership and the door being unlocked.                 Here, by contrast, the
    statements made by the Riveras when questioned by the officers
    permitted the inference that there was an arrangement in the house
    whereby the Riveras could come and go from Casey's room at will.
    Finally, Casey's contention that the Riveras' consent
    was not voluntary fails.           While Mr. Rivera did testify that the
    presence of numerous officers at his home made him nervous, the
    record contains no suggestion that Mr. Rivera was coerced or
    threatened, or that he did not comprehend the officers' questions.
    He gave consent both at the police station before agents arrived
    at his home, and again just before the search commenced.                    He also
    did so in both English and in Spanish, orally and in writing.
    Moreover, according to the officers' testimony, the Riveras both
    appeared    comfortable     and    at    ease   with    the    presence     of   law
    enforcement in their home.           Accordingly, we affirm the district
    court's denial of Casey's motion to suppress evidence discovered
    in his bedroom.
    IV.    Parking Lot Cashier's Photo Array Identification
    Casey next challenges the order denying his motion to
    suppress the photo array identification made by Algarín, the marina
    parking    cashier,    as   unduly      suggestive.        According   to    Casey,
    Algarín     was   subject     to     undue      pressure      upon   making      the
    identification.       Casey additionally argues that he was not only
    -26-
    the darkest-skinned man in the array, but was the only black non-
    Latino, and thus the only individual pictured with "a distinct,
    long, thin facial structure, lacking the broad, flat face and wide
    cheekbones typical of Latinos of African descent."             He further
    objects because there was no in-court identification subsequent to
    the pre-trial array identification; Algarín merely authenticated
    the array he had earlier initialed.
    A.    Validity of Out-Of-Court Identifications
    A court should exclude an out-of-court identification
    based on a photo array only in those "extraordinary cases" where
    there     is     "a   very   substantial     likelihood   of   irreparable
    misidentification," a situation which could result in an unfair
    trial in violation of the defendant's due process rights.           United
    States v. Henderson, 
    320 F.3d 92
    , 100 (1st Cir. 2003) (quoting
    United States v. de Jesus-Rios, 
    990 F.2d 672
    , 677 (1st Cir. 1993)).
    "Short of that point, such evidence is for the jury to weigh . . .
    for evidence with some element of untrustworthiness is customary
    grist for the jury mill."       Manson v. Brathwaite, 
    432 U.S. 98
    , 116
    (1977).
    The defendant bears the burden to establish an out-of-
    court identification was infirm.           A two-step analysis is applied
    to such contentions:         (1) whether an "impermissibly suggestive"
    procedure was used, and (2), if so, whether the identification was
    -27-
    nevertheless reliable under a "totality of the circumstances."
    United States v. Rivera-Rivera, 
    555 F.3d 277
    , 283 (1st Cir. 2009).
    Factors pertinent to this second step include
    (1)   the opportunity of the witness to view the criminal
    at the time of the crime; (2) the witness' degree
    of attention to the crime; (3) the accuracy of the
    witness' prior description of the defendant; (4)
    the level of certainty demonstrated by the witness
    at the confrontation; and (5) the length of time
    between the crime and confrontation.
    United States v. DeCologero, 
    530 F.3d 36
    , 62 (1st Cir. 2008)
    (quoting 
    Henderson, 320 F.3d at 100
    ).
    B.    Standard of Review
    District court decisions denying motions to suppress
    pre-trial identifications are reviewed de novo, but with deference
    to any findings of fact.    United States v. Brennick, 
    405 F.3d 96
    ,
    99-100 (1st Cir. 2005).
    C.    Facts
    A few days after the search for Lizardi commenced, in an
    interview with an FBI agent, Algarín described the driver of the
    gray truck from whom he had accepted the twenty-dollar bill as "a
    black male, approximately 25 years old, of average height with a
    slim build and black hair."
    -28-
    About five weeks later, Algarín was shown an array of
    six photos by another FBI agent, Agent Moulier, and asked if he
    could   identify    the    person   he   had   described.         Agent    Moulier
    testified   at     the    suppression    hearing   that     the    photo    array
    identification took place at Algarín's home in the presence of
    Moulier and three other officers.4
    Casey's photo appeared in the middle of the top row of
    three photos, with another row of three photos below it.                    After
    about two minutes of studying the array, Algarín picked out Casey's
    picture.
    Algarín did not testify at the suppression hearing.                At
    trial, Algarín was again shown the photo array that he had marked
    with his initials eight years prior and repeated his identification
    of Casey's photo.
    D.    Application
    Casey offers no reason to believe, as he asserts, that
    "[t]he pressure on Algarín to make an identification . . . was
    undeniably overwhelming."           The circumstances of the pre-trial
    identification were not unduly suggestive.            The array contained
    4 According to Algarín's trial testimony, however, this took place
    at the home of the parents of Algarín's boss, whose brother was an
    agent seated at counsel's table during trial.
    -29-
    six black-and-white photos.         As the district court noted, while
    Casey had the darkest complexion among them, each individual could
    have been described as black, and they shared relatively similar
    facial features, a near-identical haircut, and groomed eyebrows.
    See 
    DeCologero, 530 F.3d at 62
    (while officers creating a photo
    array must make "every effort reasonable under the circumstances"
    to conduct a "balanced representation," they need not "search for
    identical twins").        The array displayed no names, and bore a
    disclaimer in Spanish and English stating that the person the
    witness saw may or may not appear among the presented pictures.
    Agent Moulier testified the array was prepared according to "policy
    about the race, sex, skin color of the person," based on the
    descriptions Algarín and other parking lot witnesses gave of the
    gray truck's driver.       While the record contains no documentation
    of     the   array   assembly    procedure      or    any   report    about    the
    identification process, Casey points us to no authority requiring
    the     government    provide    such     evidence -- a      point     especially
    important here, where the defense bears the burden to demonstrate
    the    identification    was    infirm.        Nor   does   Casey    suggest   the
    officers who created the photo array and spoke to Algarín employed
    any improper suggestive or coercive tactics.
    Even had the circumstances of the array identification
    been    unduly   suggestive,     the     identification      was     nevertheless
    reliable.     Algarín had occasion to commit the truck driver's face
    -30-
    to memory during their interaction regarding the driver's lost
    ticket, which prompted Algarín to ask for the driver's name,
    address and phone number for a lost ticket form.         The driver,
    furthermore, was unable to provide his license or registration
    documents, and told Algarín to keep the change from a twenty-
    dollar bill tendered for a parking fee Algarín testified could not
    have been more than two or three dollars.
    Also, while general, Algarín's description of the driver
    is consistent with his selection from the photo array, made a few
    weeks after his earlier contact with a driver leaving a significant
    gratuity.      See 
    id. at 61-63
    (finding no issue with an array
    identification made two to three years after the incident).        The
    district court thus did not err in denying Casey's motion to
    suppress this photo array identification evidence, and we affirm
    its ruling.
    V.      Miranda Challenge to Admission of Statements Made to
    Officers While in Custody
    Casey next appeals the order granting in part and denying
    in part his motion to suppress statements he made while in custody.
    He contends the      district court erred in   failing to suppress
    statements elicited by interrogation after he invoked his right to
    remain silent, and in its factual determination of when Casey
    invoked his right to an attorney.       The district court further
    -31-
    erred, argues Casey, in finding admissible statements overheard by
    a law enforcement officer that Casey made to his wife, Crystal
    Peña, while in custody.
    A.   Miranda Rights
    Admissibility of statements made after the right to
    remain silent has been invoked depends on whether, under a totality
    of   the   circumstances,   the   right   was   "scrupulously   honored."
    Michigan v. Mosley, 
    423 U.S. 96
    , 104 (1975).        In addition, Miranda
    protection extends to statements made in response to "any words or
    actions on the part of the police . . . that [they] should know
    are reasonably likely to elicit an incriminating response."         Rhode
    Island v. Innis, 
    446 U.S. 291
    , 301 (1980).
    B.   Standard of Review
    This court reviews matters of law related to denial of
    a motion to suppress de novo, while reviewing underlying findings
    of fact only for clear error.      We must uphold the district court's
    denial of a motion to suppress if any reasonable view of the
    evidence supports doing so.        United States v. Rojas Tapia, 
    446 F.3d 1
    , 3 (1st Cir. 2006).
    C.   Facts
    Upon his arrest, Casey was taken to PRPD headquarters
    and signed a form acknowledging he had been informed of his rights
    -32-
    before answering questions from PRPD Agent Diana Marrero in the
    early hours of August 2.    At the suppression hearing, Agent Marrero
    testified that she both read the form to Casey in Spanish and
    witnessed him read and voluntarily sign the form, both writing
    "sí," "yes" in Spanish, and verbally indicating his willingness to
    speak with her.
    Over the next several hours, Casey led officers to the
    homes   of   other   individuals   in     the   drug   trafficking   world,
    purportedly cooperating with their search for Lizardi.          After this
    excursion turned up no clear leads, Casey was taken to another
    PRPD station at Canóvanas, where the FBI assumed jurisdiction over
    him at around 6:00 a.m.      While Agent Marrero did not interview
    Casey at Canóvanas, she testified at trial that while he was there,
    Casey asked to see his grandfather and told Agent Marrero he was
    no longer interested in speaking with law enforcement.               Casey's
    grandfather arrived at that point and gave consent to the search
    of Casey's bedroom.     Casey was, in the meantime, transferred to
    the Luquillo precinct, and then to FBI premises in Ceiba, shortly
    after noon on August 2.
    At Ceiba, Agent Luis Moulier read Casey his Miranda
    rights and Casey exercised his right to remain silent.                Agent
    Moulier refrained from further questioning.
    -33-
    Close to 2:00 p.m. that afternoon at Ceiba, Agent Marrero
    approached Casey once more, this time confronting him with the
    evidence found in his bedroom.             She did not repeat his Miranda
    rights before initiating this conversation.                Casey responded with
    statements whose admission he now challenges: "maybe he is alive,
    maybe he is dead."          When pushed for details, Casey refused to
    elaborate,      stating     only   that     "there      [was]     already    enough
    evidence," and he would "go down" with that evidence.                         Agent
    Marrero recalls then appealing to Casey's emotions as a "family
    man," asking him to share any details he could about Lizardi's
    location in case Lizardi was still alive and could be rescued.                     To
    this, Casey responded, "I don't know what you are talking about."
    At some point in the course of this exchange, Casey asserted his
    right to an attorney.
    Casey's    suppression        motion      concerns    one   additional
    interaction that day.        Shortly after 4:00 p.m., agents permitted
    Casey's wife Peña and their infant child into an interview room
    where Casey was handcuffed to visit with him in the presence of
    Agent   André     Vachier-Serrano.         In   his    exchange    with     Peña   as
    overheard    by     Agent    Vachier-Serrano,          Casey     made   statements
    including "[k]illing a cop is a federal case," and "[T]hey seized
    a lot of evidence at the house but they don't have the body,
    anyway, he was an undercover cop and he knew he was on his way to
    do a drug deal with me and could come out dead or alive," which
    -34-
    Casey now    contends   the district court erred in declining to
    suppress.
    In this same conversation, Casey also advised Peña to
    obtain employment certificates from his social worker and change
    the dates on them to obtain a loan.     Their exchange also included
    reference to some prior offense "when they got us with drugs and
    we came out."   Casey asserts this entire interaction comprised an
    unconstitutional interrogation, and none of its content should
    have been admitted.
    The district court granted in part and denied in part
    Casey's motion to suppress the statements made to Agent Marrero at
    Ceiba and those overheard by Agent Vachier-Serrano.    Below, Casey
    contended to no avail that all his statements to Agent Marrero
    should have been suppressed because he was assaulted upon arrest,
    leading him to waive his      Miranda   rights involuntarily.   The
    district court found no evidence to substantiate the purported
    assault, and ruled that even had Casey been assaulted, the waiver
    he gave at PRPD headquarters was voluntary.      Finding that Casey
    had, however, asserted his right to counsel during his interview
    with Agent Marrero at Ceiba just before Agent Marrero appealed to
    Casey's sensibilities as a father, the district court suppressed
    Casey's statements made thereafter.     Finally, the district court
    concluded that Casey's conversation with Peña was not a custodial
    -35-
    interrogation or equivalent to FBI questioning, and declined to
    suppress any of what Agent Vachier-Serrano overheard.
    D.   Application
    On appeal, Casey again argues all his statements to Agent
    Marrero   should   have   been    suppressed.     He    asserts    that   the
    invocation of his right to remain silent at Canóvanas and again at
    Ceiba with Agent Moulier, prior to the Ceiba interview with Agent
    Marrero, should have rendered all his statements to Agent Marrero
    at Ceiba inadmissible.
    While   Miranda       does   not   categorically   forbid      the
    resumption of questioning once a person in custody has asserted
    his or her rights, under Mosley, whether statements obtained after
    the detained person has decided to remain silent are admissible
    depends on whether, under a totality of the circumstances, the
    person's "right to cut off questioning was scrupulously 
    honored." 423 U.S. at 104
    (internal quotation marks omitted).               On appeal,
    Casey contends that questioning him after both instances in which
    he asserted his Miranda rights not to speak was impermissible under
    Mosley.
    Casey made no such argument below.          He rather proceeded
    on the theory that the alleged assault by PRPD officers rendered
    any waiver of his Miranda rights involuntary.          He cannot now raise
    -36-
    a new basis for suppression, and accordingly we deem this argument
    waived.   United States v. Torres, 
    162 F.3d 6
    , 11 (1st Cir. 1998).5
    Casey next claims error in the factual determination of
    the point in time during the Ceiba interview with Agent Marrero
    Casey at which invoked his right to an attorney.    Because it was
    impossible to tell, he argues, no part of the conversation should
    have come into evidence.     There was no clear error in placing
    Casey's invocation of his right to an attorney after his statement
    that Lizardi was "maybe alive" or "maybe dead" but before Agent
    Marrero's appeal to his values as a father, and admitting only
    part of the conversation accordingly.   Agent Marrero testified as
    much, and her notes corroborated this finding.
    Finally, the district court was correct to conclude that
    Casey's conversation with his wife was not the result of an
    5 Even if his assertions on appeal about his earlier invocations
    of the right to remain silent are accurate and not waived,
    statements made after a defendant has invoked his right to remain
    silent may nevertheless be admissible.       Factors to determine
    whether such statements should be admitted include the time elapsed
    between interrogations, the provision of fresh Miranda warnings,
    the scope of the follow-up interview, and the zeal of the officers
    in pursuing questioning.     
    Mosley, 423 U.S. at 104-06
    ; United
    States v. Hsu, 852, F.2d 407, 410 (9th Cir. 1998). It is not in
    dispute that several hours passed between interviews, and that
    Casey was moved to different locations.     He moreover offers no
    indication that the officers approached him with any particularly
    coercive tactics.
    -37-
    interrogation.        "A volunteered statement is not the product of
    interrogation and not subject to suppression, even if warnings
    have been provided."          United States v. Jackson, 
    544 F.3d 351
    , 357
    (1st Cir. 2008).           Casey offers no evidence that the FBI brought
    Peña in for interrogation purposes.                   Rather, the record reflects
    that she had been following Casey to the various locations he was
    taken and wanted to meet with him of her own volition.                  See Arizona
    v. Mauro, 
    481 U.S. 520
    , 530 (1987) (a defendant's voluntary
    statements     to    his    spouse    while      in   custody     overheard   by   law
    enforcement need not be suppressed).                  Casey also does not dispute
    that he was fully aware Agent Vachier-Serrano was present and
    within earshot.        We therefore affirm the district court's order
    granting in part and denying in part Casey's motion to suppress
    statements he made while in custody.
    VI.    Challenge to Admission of All Statements Due to Lack of
    Prompt Presentment
    Casey argues for the first time on appeal that all of
    his statements should have been suppressed for failure to promptly
    bring him before a magistrate judge.                  He admits, however, that he
    declined to raise this argument below.                   Motions to suppress must
    be raised prior to trial, and failure to do so in a timely manner
    constitutes waiver.          Fed. R. Crim. P. 12(b)(3)(C); United States
    v.   Dietz,    
    950 F.2d 50
    ,    55   (1st    Cir.    1991)    ("Arguments     not
    seasonably addressed to the district court may not be raised for
    -38-
    the first time in an appellate venue.").   Casey offers no authority
    to suggest otherwise.   We therefore deem this argument waived.
    VII. Challenge To Alleged Trial Errors Infringing Casey's Right
    to Confrontation and to Present a Defense
    Next, Casey urges that the district court committed a
    series of errors throughout his trial, including: (1) admitting
    irrelevant and unduly prejudicial evidence under Federal Rule of
    Evidence 404(b), specifically statements he made to Peña while in
    custody and photographs of Lizardi's body; (2) limiting Casey's
    cross-examination of agents about investigation efforts prior to
    August 1, 2005; and (3) rejecting under Daubert the preliminary
    report from an internal PRPD investigation and its recommendation
    of sanctions against several involved officers.
    A.   Standard of Review
    Preserved evidentiary objections are reviewed under an
    abuse of discretion standard.   This court must nevertheless affirm
    even where it finds error, as long as it deems the error harmless.
    United States v. Rosado-Pérez, 
    605 F.3d 48
    , 54 (1st Cir. 2010).
    A series of evidentiary issues, none of which individually warrants
    reversal, may have a cumulative effect, rendering the trial unfair.
    United States v. Sepúlveda, 
    15 F.3d 1161
    , 1195-96 (1st Cir. 1993).
    Where, as here, the argument that trial errors had a cumulative
    effect upon a defendant's right to confrontation and to present a
    -39-
    defense is raised for the first time on appeal, review is under a
    plain error standard.     United States v. Sánchez-Berríos, 
    424 F.3d 65
    , 73 (1st Cir. 2005).
    B.   Irrelevant and Unduly Prejudicial Evidence
    1.   Federal Rules of Evidence 402, 403, and 404(b)
    Rules 401 and 402 provide that all "relevant" evidence,
    or that which has a "tendency to make a fact more or less probable
    than it would be without the evidence," is admissible.      However,
    under Rule 403, "[t]he court may exclude relevant evidence if its
    probative value is substantially outweighed by a danger of one or
    more of the following: unfair prejudice, confusing the issues,
    misleading the jury, undue delay, wasting time, or needlessly
    presenting cumulative evidence."      Under Rule 404(b), evidence of
    past wrongs is not admissible character evidence to demonstrate a
    defendant's propensity to behave in a certain manner.
    2.   Application
    a.   Casey's Statements to Peña
    Agent Vachier-Serrano first testified as to statements
    Casey made to his wife about falsifying an employment certificate,
    described above.    The court denied a hearsay objection and granted
    a relevance objection.     It then gave a limiting instruction to the
    jury, stating that because the "references to fraudulent conduct
    -40-
    . . . ha[ve] no bearing on the nature of the charges . . . you may
    disregard."
    The government then elicited further testimony from
    Agent   Vachier-Serrano   about    the    current   investigation    and   a
    reference Casey made to a prior case.       He recalled statements from
    Casey such as "in the house they seized a lot of evidence but that
    they weren't going to find the body," "[Casey] was going to come
    out of this case well," and "reference to another case, a drug
    case that he had with [Peña] . . . [a]nd they had come out of the
    case okay."    Casey's relevance objection was overruled.
    Casey argues, for the first time on appeal, error in the
    refusal to strike the testimony about falsifying an employment
    certificate,   and   denial   of   his    objection   to   Agent   Vachier-
    Serrano's reference to the prior drug offense.             Casey contends
    this evidence had no probative value, and was merely introduced
    for the impermissible purpose of showing propensity.
    There was no plain error in finding to the contrary.
    The limiting instruction as to Casey's instructions to Peña to
    falsify an employment certificate made clear to the jury that the
    fraudulent conduct Casey was describing to Peña had no bearing on
    this trial.    See United States v. Williams, 
    717 F.3d 35
    , 42 (1st
    Cir. 2013).
    -41-
    Nor does the court's rationale to permit Agent Vachier-
    Serrano's testimony about the prior drug case constitute an abuse
    of discretion.     While it is conceivable that Casey's statements
    about the prior drug offense perhaps reflected his consciousness
    of guilt, any such error was likely harmless.              Other evidence
    alerted the jury to Casey's ties to the criminal underworld; it
    was, indeed, no secret that Casey led the police around for several
    hours just after his arrest to point out to them other drug
    traffickers with possible tips on Lizardi's whereabouts.            It is
    doubtful that knowledge of an unspecified prior drug offense could
    convince a jury to convict Casey of the charges in this case.
    b.    Photographs of Lizardi's Body
    The    government     introduced    nearly   twenty   photos   of
    Lizardi's decomposing body.        Five were admitted, over objection,
    through a PRPD sergeant's testimony about following the body's
    stench to locate it; fourteen were autopsy photographs to show
    bullet trajectories, to which Casey did not object; and two, to
    which Casey did object, were of the body at different angles,
    showing what it looked like after it was recovered.             Copies of
    only the last two were provided for this court's review on appeal.
    Casey   contends      the   objected-to    photos   were   irrelevant    and
    inappropriately submitted to spur an emotional reaction from the
    jury.
    -42-
    It is more than plausible that the first five photos
    corroborated various pieces of testimony:                  the body had been
    dragged down the hill to its discovered location; Casey's statement
    to Peña that the body would be difficult to find; and the time it
    took to locate the body.           The jury received instruction prior to
    the photos' admission not to be swayed by emotion in viewing this
    evidence.     The last two photos might likewise have corroborated
    testimony that the body had been left outdoors for a few days.
    See United States v. Cruz-Kuilan, 
    75 F.3d 59
    , 61 (1st Cir. 1996)
    (no abuse of discretion in admitting photographic evidence of
    victim's wounds in a carjacking case, as such evidence spoke to
    elements     of   the    offense,    including    force,     violence,     and/or
    intimidation).
    "A   decision    by    the   district   court      on   a   Rule   403
    determination must stand absent a demonstration of extraordinarily
    compelling circumstances."          United States v. Lombard, 
    72 F.3d 170
    ,
    190 (1st Cir. 1995) (internal quotation marks omitted).                     Casey
    makes   no    such      demonstration     with   regard    to    these    photos.
    Especially among the array of other photographs and forensic
    evidence put before the jury, we do not find admission of two
    additional photos of the body as agents discovered it to rise to
    an abuse of discretion.
    -43-
    C.    Orders Limiting Cross-Examination of PRPD and FBI Agents
    According    to   Casey,     the        district     court's      rulings
    limiting    cross-examination     of    Agents       Agosto     and    Moulier,   and
    Commander    Morales,    improperly      prevented         him       from   eliciting
    testimony essential to the theory of his case -- that another
    person, Hernández, was actually Lizardi's killer, and that the
    investigation had unduly zoomed in on Casey while ignoring leads
    pertaining to Hernández.        Casey had hoped to demonstrate that
    internal administrative PRPD investigations had found officers
    negligent in planning the undercover drug buy which had resulted
    in Lizardi's death.
    The   Confrontation        Clause       of    the    Sixth      Amendment
    guarantees    criminal    defendants          the    right      to     cross-examine
    witnesses who testify against them.            United States v. Vega Molina,
    
    407 F.3d 511
    , 522 (1st Cir. 2005).                  This right is not without
    limits, however; the district court wields considerable discretion
    to impose "reasonable limits" on cross-examination.                    United States
    v. Raymond, 
    697 F.3d 32
    , 39-40 (1st Cir. 2012).                  We review de novo
    whether a defendant was afforded a reasonable opportunity to
    impeach a witness, and for abuse of discretion limitations the
    trial court imposed on that opportunity.                 
    Id. -44- 1.
       Agent José Agosto
    Agent Agosto was Lizardi's supervisor.                             Casey first
    argues he was prevented from impeaching Agent Agosto on the basis
    of a PRPD internal disciplinary investigation involving Agent
    Agosto.    It is clear that the district court did not abuse its
    discretion      in       limiting    questioning         on    this     subject,       however.
    After a sidebar dispute about whether defense counsel could ask
    about    the    investigation's              preliminary           findings -- that       Agent
    Agosto    had       acted   negligently           –-   as    opposed       to    its   ultimate
    conclusion of no negligence, the court permitted defense counsel
    to question Agent Agosto about the former as long as counsel made
    clear    that       it   had    been    a    preliminary           decision.       As    cross-
    examination was not materially limited here, we conclude there was
    no   error.          Even      had   questioning            been    limited,      preliminary
    investigatory results contradicted by a final determination have
    limited    probative           value,       and   pose       the    risk    of    engendering
    significant confusion for jurors.                      Fed R. Evid. 403.
    Casey also argues abuse of discretion in keeping him
    from impeaching Agosto based on purportedly conflicting statements
    about whether Lizardi, Casey and Hernández met a few days before
    the events of August 1, 2005.                 On the stand, Agent Agosto testified
    Hernández and Lizardi did not meet on July 28, 2005, days before
    the events of August 1.                Defense counsel moved unsuccessfully to
    -45-
    introduce, as a prior inconsistent statement, a report prepared in
    2005 by Agent Agosto documenting that such a meeting did occur, on
    information Lizardi had shared with Agosto at that time.                  While
    the district court excluded the report, it did allow defense
    counsel to question Agent Agosto about the July 28 meeting.               Agent
    Agosto's answers revealed that Lizardi, with Casey at the Holiday
    Inn, spoke to Hernández by phone on July 28 to plan the August 1
    drug buy (although Agent Agosto maintained that Hernández was not
    present in person).
    Any error by the court here was certainly harmless.
    Casey was able to use Lizardi's telephone records to impeach Agent
    Agosto's testimony to show that Lizardi did speak to Hernández on
    July 28.
    2.    Commander Morales
    The district court similarly did not err in limiting
    Morales's testimony to events on August 1, 2005, and thereafter as
    direct examination covered only the events on and after August 1.
    The court informed Casey of his right to call Morales as a defense
    witness    to    elicit   testimony   about   the   July   28   meeting    that
    purportedly took place prior to August 1.            In addition, Morales
    testified that he had never met Lizardi, and admitted that his
    information was based on reports from other officers, introducing
    several levels of hearsay.
    -46-
    3.    Agent Moulier
    Casey further contends the district court abused its
    discretion in limiting questioning about Agent Moulier's review of
    investigative     reports   describing     Lizardi's    contacts   with
    Hernández.     Agent Moulier testified extensively about efforts to
    investigate Hernández and evidence gathered against him; it was
    not an abuse of discretion to find questions about Hernández being
    the drug buy contact duplicative.
    Casey's    additional   arguments   that   these   limitations
    precluded him from contending that authorities "dropped the ball
    when they failed to follow up on statements and evidence in their
    hands implicating Hernández" is also without merit.           While the
    court did exclude statements deemed improper opinion testimony
    from a non-expert witness, it did permit Casey's counsel to elicit
    a critical point on cross-examination -- that hair found on the
    discovered black backpack did not belong to Casey or Lizardi (with
    the caveat that the results could have been affected over time),
    but was not tested against Hernández.
    D.   Police Practices Expert Testimony
    According to Casey, the district court further abused
    its discretion in precluding him from presenting a police practices
    expert, Dr. William Gaut.       Casey's intent was to have Dr. Gaut
    opine on whether the undercover          operation was planned up to
    -47-
    standards.       While Casey stresses on appeal the relevance of Dr.
    Gaut's testimony, Dr. Gaut testified that he never saw any PRPD
    standards or policies for undercover work; and that he was not
    even aware whether the FBI or PRPD were part of the Commission for
    Accreditation of Law Enforcement Agents.               The district court
    furthermore reasoned that such evidence could confuse the jury,
    tasked    with    deciding   Casey's   culpability,     not   whether    PRPD
    committed negligence.        It was hardly an abuse of discretion for
    the district court to exclude expert testimony from someone with
    little apparent knowledge of the standards with which FBI and PRPD
    investigations must comply.       See Ruiz-Troche v. Pepsi Cola of P.R.
    Bottling Co., 
    161 F.3d 77
    , 81 (1st Cir. 1998) (expert testimony
    must be reliable, as well as relevant in the sense that "the
    expert's proposed opinion, if admitted, likely would assist the
    trier of fact to understand or determine a fact in issue").
    E.    PRPD Internal Investigator Rodríguez-Torres Testimony and
    Report
    Nor was there an abuse of discretion in refusing to allow
    testimony from a PRPD internal affairs investigator, Agent Carlos
    Rodríguez-Torres, and his preliminary report finding negligence in
    the planning of Lizardi's undercover operation, to impeach Agent
    Agosto's   testimony.        Significant   confusion    arose   before   the
    district court over whether sanctions were recommended in the
    report (they were not -- the recommended approach was ultimately
    -48-
    reduced to orientation training), and whether it represented a
    final administrative determination.
    Moreover, it became clear that Agent Agosto had never
    seen this preliminary report, and thus could not be impeached with
    its contents.       Finally, the government was unable to demonstrate
    that the officers whose statements appeared in the report had
    personal knowledge of the events they were describing -- or, for
    that matter, that Agent Rodríguez-Torres had sufficient personal
    knowledge.    See Fed. R. Evid. 602.             The district court thus did
    not abuse its discretion in excluding testimony concerning the
    Rodríguez-Torres report.
    F.   Cumulative Effect
    Casey argues the cumulative impact of this purported
    litany of errors precluded him from receiving a fair trial.                  Even
    if some, or all, of the above decisions were mistakes, they appear
    to concern evidence tangential to the government's case against
    Casey.    Indeed, even had Casey been able to implicate Hernández
    as the more likely perpetrator with some of the above evidence, or
    to undermine the PRPD's credibility, he would not have been able
    to eviscerate the positive evidence against him.
    This    court     is   to    weigh   trial   errors   "against    the
    background of the case as a whole," paying attention to factors
    including    "the    nature    and      number   of   errors   committed;   their
    -49-
    interrelationship, if any, and combined effect; how the district
    court dealt with the errors as they arose" and "the strength of
    the government's case."            
    Sepúlveda, 15 F.3d at 1196
    .      Given our
    determinations that the district court did not abuse its discretion
    in   making    any   of    these    rulings -- let     alone   commit    harmful
    error -- we find no cumulative impact on the fairness of the trial
    Casey received.
    VIII.       Confrontation Clause Challenge to Expert Witness
    Testimony
    For the first time on appeal, Casey argues his Sixth
    Amendment right to confrontation was violated when a purported
    surrogate witness, Carna Meyer, testified to introduce three DNA
    evidence      reports.       Specifically,     Casey     argues   that    under
    Bullcoming v. New Mexico, 
    131 S. Ct. 2705
    , 2713 (2011), he was
    unconstitutionally deprived of any chance to face the biologist
    whose work underpinned the conclusions drawn by the reports about
    which Meyer testified.
    A. Standard of Review
    Objections    forfeited below are        reversible for      plain
    error.     Fed. R. Crim. P. 52(b); United States v. Olano, 
    507 U.S. 725
    , 732 (1993) ("plain errors" are "defects affecting substantial
    rights").     By contrast, where a defendant has affirmatively waived
    his or her objection, or, in other words, conveyed a "considered
    -50-
    decision not to avail [him or her]self of a procedural right," we
    need not even search.        United States v. Medina, 
    427 F.3d 88
    , 91
    (1st Cir. 2005) ("[O]ur even contemplating a claim of error [in
    such a case] would imply an obligation on trial judges to second-
    guess counsel in a way that would disturb that entitlement.                 This
    will not do.").           Here, via his counsel, Casey             affirmatively
    announced he had no objection to admission of Meyer's testimony
    and   the   three   reports,   and    cannot   now     claim   a   violation   of
    constitutional rights merely to reverse course on a trial strategy
    that proved unsuccessful.
    B. Background
    Before trial, expert Brendan Shea had prepared a report
    based on analysis of the gathered physical evidence, which showed
    that DNA from the twenty-dollar bill matched Lizardi; DNA from the
    floors and swabs of the abandoned structure matched Lizardi; and
    Lizardi was "potentially the major contributor" of DNA on the flip-
    flops found in Casey's bedroom.              The report was not signed or
    certified by anyone but Shea.
    The government originally designated Tina Delgado as the
    witness     who   would   introduce   the    report.      Casey     moved   under
    Crawford v. Washington, 
    541 U.S. 36
    (2004), Melendez-Diaz v.
    Massachusetts, 
    557 U.S. 305
    , 309 (2009), and Bullcoming, 131 S.
    Ct. at 2713, to exclude her testimony on the grounds that Delgado
    -51-
    did not bear a sufficient connection to the scientific testing
    involved in the report's preparation.              The government committed
    to   examining      whether   Delgado's     testimony   would   comply     with
    evidentiary rules and to supplying an appropriate witness, and the
    motion was denied without prejudice as concerning an issue not yet
    ripe.
    On the eve of trial, the government designated two
    additional DNA reports authored by Meyer, as well as Shea's report.
    It then called Meyer to introduce all three.                Regarding Shea's
    report, Meyer testified that she had "reviewed all of the data,
    the notes, and the underlying paperwork" and "agreed with all of
    its interpretations."         Critical here is that when the government
    moved to admit the three reports into evidence, the district court
    asked Casey if there were any objections -- to which his counsel
    squarely replied, "[n]o, Your Honor."          Nor did Casey lodge a single
    objection   to   Meyer's       endorsement    of   Shea's   report,   or    her
    subsequent testimony about all the reports' specific results.               And
    during a sidebar the next day on a separate issue, Casey's counsel
    affirmed this stance, stating the defense "ha[s] not disputed the
    DNA."
    C.   Application
    Given    Casey's    express     waiver --   offered   after     the
    government made clear its intent to admit all three reports with
    -52-
    Meyer's testimony, and tainted by no subsequent indications of
    misunderstanding or regret prior to this appeal -- we have little
    further to do in the way of analysis, and must deny his objection
    without reaching its merits.       United States v. Soto, 
    799 F.3d 68
    ,
    96   (1st   Cir.    2015)   (declining    to    reach   the     merits    of   a
    confrontation      objection   raised    on   appeal,   where    the     circuit
    interpreted the defense's silence below to indicate the defense
    saw nothing objectionable).6
    IX.   Denial of Recusal Motion
    6 It may nevertheless be worth briefly examining how this move
    might have been an intended tactic of Casey's trial strategy. At
    closing, Casey's counsel neatly summed up their theory of the case:
    that the PRPD and FBI investigation was so affected by "tunnel
    vision" that it leapt to pin Lizardi's death on Casey without
    adequately investigating other potential suspects, chiefly
    Alexander Hernández. It was in service of this narrative that,
    throughout the trial, Casey's counsel highlighted how the FBI could
    have collected more DNA samples and conducted more DNA tests that
    could have implicated Hernández. One such instance, she argued,
    was when the blood on Casey's sandal was revealed to contain "a
    mixture of DNA," indicating "more then [sic] one contributor," but
    was not subjected to further analysis. Such a strategy, we think,
    hinged on the accuracy and admission of the FBI's DNA analyses.
    There otherwise would have been little reason for the jury to
    believe that more testing would have led the FBI to Hernández.
    Although this is mere speculation on our part, Casey, it appears,
    had plausible reason to welcome admission of the government's DNA
    reports.
    -53-
    Casey's final challenge concerns his unsuccessful motion
    for the district court's recusal after it initiated a disciplinary
    proceeding against the defense, prior to the start of his criminal
    trial.     The disciplinary proceeding was based on a complaint the
    government lodged asserting that Casey's team had interviewed
    Hernández without permission from his counsel, and asked him to
    recant in exchange for help in a related state court case.
    While      investigation       of    the   defense's     purported
    misconduct    was     referred    to   another   judge,   Casey's   particular
    objection and reason for requesting recusal was that, in the course
    of the proceeding, the district judge allegedly met with the
    prosecution      ex    parte     for    assistance     reviewing    subpoenaed
    evidentiary documents.           Casey also contends that the mere fact
    that the district judge undertook such an ethics investigation so
    close to the eve of trial created an impermissible appearance of
    impropriety.
    A. Rules of Recusal
    According to 28 U.S.C. § 455(a), any judge or justice
    shall disqualify him or herself in any proceeding where his or her
    impartiality might reasonably be questioned.              Canon 3(A)(4) of the
    Code of Conduct for United States Judges states that judges should
    not   initiate   or    consider    ex    parte   communications     on   pending
    matters.     It does provide the exception, however, that ex parte
    -54-
    communication is permissible for administrative purposes, only if
    it is limited to non-substantive matters and the judge reasonably
    believes no party will gain an advantage as a result.
    B.   Standard of Review
    A district court's decision not to recuse itself is
    reviewed for abuse of discretion.       United States v. Pulido, 
    566 F.3d 52
    , 62 (1st Cir. 2009).   This court must sustain the district
    court's ruling unless it can find the decision was not reasonable
    and is unsupported by the record.      
    Id. C. Background
    The district court maintained that communications with
    the government about the subpoenaed documents were limited to
    determining whether the documents were irrelevant and sent to
    chambers in error.      Casey does not contest that the judge's
    secretary asked the prosecutor to come review the documents, or
    that the government's interaction with the judge was minimal.    The
    record does not suggest that the prosecutor and judge at any point
    discussed the merits of Casey's case, reviewed the substance of
    the documents together, or had any other substantive exchange.
    D.   Application
    Casey has not brought to light facts on which we might
    find the district court abused its discretion in declining his
    -55-
    recusal motion.      It was within the pale of the district judge's
    duties to act on the ethical misconduct allegations; and it even
    took the step of referring the misconduct proceeding to another
    judge, altogether severing its fate from that of Casey's criminal
    proceedings.        Casey    also    points      to    no     evidence   that    the
    government's   ex    parte   communications           with    the   district    judge
    involved either the merits of his criminal case or the ethical
    misconduct allegations.       Cf. Haller v. Robbins, 
    409 F.2d 857
    , 859
    (1st Cir. 1969) (finding a due process violation in a habeas case
    where the subject of an ex parte communication by the government
    to   the   sentencing   judge       was   a   hearsay        statement   about   the
    petitioner's conduct).       Without more, we must affirm the district
    court's ruling.
    X.      Conclusion
    Casey appeals a host of district court decisions made
    before and during his jury trial.             Upon careful consideration, and
    for all the above reasons, we affirm.
    AFFIRMED
    -56-