United States v. Etienne , 772 F.3d 907 ( 2014 )


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  •             United States Court of Appeals
    For the First Circuit
    No. 13-1387
    UNITED STATES OF AMERICA,
    Appellee,
    v.
    ESTEVENSON ETIENNE,
    Defendant, Appellant.
    APPEAL FROM THE UNITED STATES DISTRICT COURT
    FOR THE DISTRICT OF MASSACHUSETTS
    [Hon. George A. O'Toole, U.S. District Judge]
    Before
    Lynch, Chief Judge,
    Thompson, Circuit Judge,
    and Smith,* District Judge.
    Charles W. Rankin, with whom Kerry A. Haberlin was on brief,
    for appellant.
    Mark T. Quinlivan, Assistant United States Attorney, with whom
    Carmen M. Ortiz, United States Attorney, was on brief, for
    appellee.
    October 29, 2014
    *
    Of the District of Rhode Island, sitting by designation.
    THOMPSON, Circuit Judge.         This appeal arises out of the
    government's attempt to prove the old adage, where there's smoke
    there's fire. Appellant Estevenson Etienne ("Etienne") appeals his
    conviction on a charge of conspiring to distribute cocaine base,
    otherwise known as "crack."       Thanks to the jury's guilty verdict,
    Etienne found himself sentenced to seventy months (nearly six
    years) in jail.
    Now, Etienne asks us to vacate his conviction because he
    says the district judge admitted improper overview testimony from
    a government agent, allowed government witnesses to identify voices
    on recordings without proper foundation, and erroneously permitted
    law enforcement officers to improperly interpret for the jury what
    was taking place on those recordings.         In the alternative, Etienne
    seeks resentencing pursuant to Alleyne v. United States, 
    133 S. Ct. 2151
    (2013).
    We affirm.
    I. BACKGROUND
    Because Etienne's appeal follows the jury's finding of
    guilt, we view the facts in the light most favorable to the
    verdict.   United States v. Rodriguez, 
    731 F.3d 20
    , 23 (1st Cir.
    2013),   cert.   denied,   134   S.   Ct.   1329   (2014).   We   begin   by
    summarizing the evidence at trial, reserving additional details for
    our discussion of Etienne's specific arguments.
    -2-
    A. The ATF Investigation
    2009 found the Bureau of Alcohol, Tobacco, Firearms, and
    Explosives ("ATF") looking to smoke out drug dealers on Boston's
    North Shore.         Our story begins with an individual identified only
    as   "Paul."         Paul   found      himself     in   hot    water   after   the   ATF
    discovered he had illegally procured a gun for an individual we'll
    call "Smith,"1 a known criminal in the North Shore town of Lynn,
    Massachusetts. When confronted with the evidence against him, Paul
    agreed      to    work    with   the   ATF    in   order      to   avoid   prosecution.
    Ultimately, the ATF had Paul buy $40 of cocaine from Smith.
    The ATF went up the chain, so to speak, and let Smith
    know they had him on drug distribution.                       Like Paul before him,
    Smith agreed to become an informant and cooperate in the ATF's
    investigation.           Ultimately, Smith worked with the ATF for about a
    year and helped out with over a dozen investigations.                          Over the
    course of the year, the ATF paid him in excess of $4100 for his
    assistance, $400 of which was attributable to his work enabling
    this particular prosecution.
    Making use of Smith's knowledge, ATF Special Agent John
    Mercer ("Mercer") identified several additional targets in the
    area.       Among them were Andre Jean-Francois, known as "Black," and
    1
    "Smith" is an alias. We have changed his name in light of
    concerns about the safety of cooperating witnesses raised by the
    Committee on Court Administration and Case Management of the
    Judicial Conference of the United States.
    -3-
    Etienne, who went by the nickname "Smoke," and Smith described them
    as drug dealers from whom the ATF could buy crack.          Mercer had him
    set up controlled buys to catch them in the act.          Each transaction
    (there   were   two)   began   with    Smith   calling   Jean-Francois   to
    negotiate the deal, after which Jean-Francois arranged for Smith to
    make the physical purchase from Etienne.         Although the deals were
    recorded through the use of a body wire, the government did not
    introduce any video or photographic evidence depicting the deals as
    they went down.
    The first deal took place on July 22, 2009.         On Mercer's
    instructions, Smith had called Jean-Francois the previous day
    looking to buy half an ounce of crack, and the two agreed on a
    price of $600.    On July 22, Smith met with Mercer and other law
    enforcement agents before getting back in touch with Jean-Francois.
    With the agents listening in and recording the conversation, Smith
    called Jean-Francois to hammer out the details, and they agreed to
    meet at a house where Smith's young son lived in Lynn.              Before
    leaving for the rendezvous, Smith donned a body wire and law
    enforcement officers gave him $600 to pay for the drugs.             Smith
    then went to his son's house to wait for Jean-Francois.
    Shortly after Smith got to the house, Jean-Francois
    called him back to say that plans had changed.           Smith would now be
    buying the drugs from Etienne instead, and Smith was to go to
    Etienne's home, which was also in Lynn. Jean-Francois told him the
    -4-
    price had gone up too, and was now $650.     Mercer authorized Smith
    to use $50 from his own pocket to cover the difference.
    After hearing from Jean-Francois, Smith called Etienne to
    confirm the new plan.       Etienne confirmed they would make the
    exchange at his house on Hollingsworth Street, and Smith headed
    over.    Massachusetts State Trooper James Bruce ("Bruce")--who was
    conducting surveillance and listening to Smith's body wire as a
    part of the ATF's investigation--observed Smith arrive at Etienne's
    house.    Bruce observed Smith speak briefly with Etienne on the
    porch before both men headed inside.
    Once inside, Smith and Etienne spoke for a few minutes
    about Smith's car and young son (who was sick with cancer), and
    Etienne's daughter, who Etienne had custody of because her mother
    was in jail.      Etienne also asked Smith whether Smith was still
    selling marijuana, to which Smith replied that he only sold crack
    now.     While inside, Smith gave Etienne the $650 and in return
    received a plastic bag containing what Smith believed to be half an
    ounce of crack.
    After a few minutes, Bruce observed Smith emerge from
    Etienne's house, get in his vehicle, and drive up the street Mercer
    intercepted Smith at the end of the street and followed him back to
    a prearranged meeting location.     When they arrived at the spot,
    Smith handed a plastic baggie over to law enforcement agents.    The
    -5-
    parties stipulated that the plastic bag contained 15.25 grams of
    crack.
    The second transaction happened on July 30, 2009.     This
    time, Mercer instructed Smith to call Jean-Francois to ask about
    buying a whole ounce of crack.     Smith did so, and Jean-Francois
    agreed to make the sale for $1300.     Once again, Smith met with law
    enforcement agents before the buy.     While in their presence, Smith
    placed three recorded calls to Jean-Francois to further discuss the
    terms of the deal, ultimately confirming he would buy one ounce of
    crack for $1300.   As before, the plan was for Smith to physically
    get the drugs from Etienne, although this time Jean-Francois wanted
    Smith to first visit him at his auto-detailing shop in Salem,
    Massachusetts.
    Law enforcement agents equipped Smith with a body wire
    and gave him $1300 to close the deal before sending him out.   Smith
    went to see Jean-Francois at his shop, where they smoked weed
    together and talked about the impending crack deal.     They also got
    into some of their past history and discussed a debt Smith still
    owed Jean-Francois.   The debt dated back to a time (before Smith
    became an informant) when Jean-Francois "front[ed]" him some crack
    but, unfortunately for both, Smith "ended up getting locked up" and
    was unable to pay for it.
    After leaving Jean-Francois's shop, Smith called Etienne
    to say he was on the way.   At first, Etienne said he wasn't ready
    -6-
    for Smith because he hadn't gotten the drugs yet, but called Smith
    right back and told him to come on over.       When Smith entered
    Etienne's house, Bruce was again listening to the body wire and
    watching from a distance.
    Etienne asked Smith how much he had with him, and Smith
    responded "thirteen."       Smith gave the $1300 to Etienne, and
    received back a "regular sandwich baggie" containing an ounce of
    crack. As before, Smith traveled to a prearranged meeting location
    (again under the watchful eyes of law enforcement) where he turned
    the plastic bag over to law enforcement agents.        The parties
    stipulated that this bag contained 27.82 grams of crack.
    B. Criminal Proceedings
    On March 23, 2011, a federal grand jury indicted Jean-
    Francois and Etienne, charging them with conspiracy to distribute
    crack in violation of 21 U.S.C. §§ 841(a)(1) and 846.          The
    indictment alleged the conspiracy began at "a time unknown," but
    was in existence "at least by on or about July 22, 2009, and
    continuing thereafter until on or about July 30, 2009." It further
    alleged Etienne and Jean-Francois conspired to distribute at least
    five grams of crack, which at the time it issued would have
    triggered a mandatory minimum sentence of five years under 21
    U.S.C. § 841(b)(1)(B).2
    2
    The Fair Sentencing Act of 2010 increased the amount of
    crack necessary to trigger the mandatory five-year minimum sentence
    from five grams to twenty-eight grams. See Fair Sentencing Act of
    -7-
    Etienne's jury trial began on July 30, 2012, and lasted
    three days.3 The government called three witnesses: Mercer, Smith,
    and Bruce.    Etienne did not testify or put on an affirmative case.
    Instead, he focused on attacking Smith's character and credibility
    during cross examination, homing in on Smith's potential motives
    for cooperating with law enforcement.        In particular, Etienne got
    Smith to admit that if he did not cooperate, he was looking at "mad
    time" for his own past crimes, which involved drug dealing,
    carrying a firearm without a license, and assault with a dangerous
    weapon.   Smith also admitted that he received "$200 every time, no
    matter what" for each drug deal he engaged in at the ATF's behest.
    In   his   closing,   defense   counsel    impugned    Smith's
    credibility,      repeatedly   sounding   "if   you    can't   believe   the
    messenger, you can't believe the message" as his refrain.          Counsel
    told the jury Smith is "a bad guy, with multiple convictions for
    drugs and guns, been to jail twice," and "[d]oesn't want to go back
    and he's looking at ten plus more years" if charged with the crimes
    the government overlooked in return for his testimony.             Counsel
    described Smith as a man who "could dream up a case against his
    2010, Pub. L. No. 111-220, § 2(a)(2). Etienne was sentenced after
    the effective date of the Fair Sentencing Act, and thus the twenty-
    eight gram requirement applies to his sentence.      See Dorsey v.
    United States, 
    132 S. Ct. 2321
    , 2335 (2012).       The parties and
    district court recognized this at sentencing.
    3
    Jean-Francois pleaded guilty three days earlier.    He was
    ultimately sentenced to sixty months (or five years) of
    imprisonment, followed by four years of supervised release.
    -8-
    grandmother for two hundred bucks and a get-out-of-jail-free card."
    In sum, counsel tried to sell the jury on the idea that Smith had
    lied on the stand and simply made up the drug deals with Etienne.
    The jury did not buy what Etienne was peddling, and
    returned a guilty verdict.     At sentencing, the district judge
    determined Etienne was responsible for distributing more than
    twenty-eight grams of crack, and concluded Etienne was subject to
    a mandatory minimum sentence of five years based on this drug
    quantity. He went on to impose a seventy-month (five years and ten
    months) sentence to be followed by four years of supervised
    release, plus a $100 special assessment.
    Etienne timely appealed.
    II. ANALYSIS
    Etienne challenges both his conviction and his sentence.
    First, he asks us to throw out his conviction because the district
    judge improperly admitted certain overview, identification, and
    interpretive testimony, all of which he says improperly bolstered
    Smith's questionable credibility and consequently "eviscerated
    [his] exclusive defense at trial -- that [Smith] was lying."
    Etienne also argues Mercer improperly offered his personal opinion
    about the strength of the government's case. Failing that, Etienne
    asks us to vacate his sentence because the judge supposedly
    committed an Alleyne error at sentencing by applying the minimum
    -9-
    five-year sentence in the absence of a jury finding as to drug
    quantity.
    We address these claims in turn, beginning with the
    evidentiary challenges.
    A. Evidentiary Challenges
    1.   Standard of Review
    Etienne did not object to any of the testimony he now
    claims was admitted in error.     Accordingly, he admits that none of
    the arguments raised here have been preserved for appellate review.
    We review unpreserved evidentiary challenges for plain
    error only.      See United States v. Whitney, 
    524 F.3d 134
    , 139-40
    (1st Cir. 2008).     "[A] party who neglects to call a looming error
    to the trial court's attention acts at his peril; under plain error
    review, we have leeway to correct only the most egregious of
    unpreserved errors."     United States v. Sánchez-Berríos, 
    424 F.3d 65
    , 73 (1st Cir. 2005).     Thus, Etienne bears the heavy burden of
    demonstrating (1) that an error occurred, (2) which was plain or
    obvious, (3) affected his substantial rights, and (4) "seriously
    affect[ed]    the   fairness,   integrity,   or   public   reputation   of
    judicial proceedings."      
    Whitney, 524 F.3d at 139-40
    (citations
    omitted) (internal quotation marks omitted).           We reverse only
    sparingly in the plain error context, 
    id., and we
    should be
    especially loath to do so where it appears from the record that a
    failure to object was the result of counsel's trial tactics, see
    -10-
    United States v. Griffin, 
    818 F.2d 97
    , 100 (1st Cir. 1987) ("Nor
    can we trifle with the tactical decisions of counsel" on plain
    error review.); see also United States v. Rivera, 
    872 F.2d 507
    , 509
    (1st Cir. 1989) ("[W]e realize, too, that plain error with respect
    to a matter readily remediable, if not a trap for the court
    (advertent or inadvertent), gives a defendant a free second bite at
    the cherry, and is to be narrowly limited.").
    Against this backdrop, we address each of Etienne's
    evidentiary challenges in turn.
    2. Overview Testimony
    Etienne focuses his evidentiary challenges primarily upon
    what he dubs Agent Mercer's "overview" testimony.               An "overview
    witness"   is   a   government   agent   who   testifies   as   one    of   the
    prosecution's first witnesses and, as the term implies, provides an
    overview or roadmap of the prosecution's case to come.                 United
    States v. Brown, 
    669 F.3d 10
    , 24 (1st Cir. 2012).                     Overview
    testimony is inherently problematic for at least three reasons:
    "(1) the jury could be influenced by statements of facts and
    credibility determinations not in evidence; (2) later testimony
    could be different from what the overview witness assumed; and (3)
    the jury may place greater weight on evidence that they perceive
    has the imprimatur of the government."          
    Id. at 24
    (citing United
    States v. Flores-de-Jesús, 
    569 F.3d 8
    , 16-17 (1st Cir. 2009);
    United States v. Casas, 
    356 F.3d 104
    , 119-20 (1st Cir. 2004)).
    -11-
    Disfavored overview testimony in drug conspiracy cases is
    generally elicited when the government calls a law enforcement
    agent as its first witness to testify--based on the results of the
    agency's overall investigation, rather than on his own personal
    knowledge       or   participation--that       the   charged     drug   conspiracy
    actually existed.        See United States v. Rosado-Pérez, 
    605 F.3d 48
    ,
    55 (1st Cir. 2010) ("Overview testimony at times involves a
    witness's assertion of facts not based on his own knowledge when
    those facts are not otherwise proven.").                  The overview witness
    commonly goes on to testify about a defendant's specific role in
    the charged conspiracy.           In other words, far from providing an
    "overview" of the case, the witness actually testifies that the
    defendant is guilty of the crime charged.
    For more than a decade now, we have repeatedly admonished
    prosecutors who insist on presenting this sort of testimony.
    
    Brown, 669 F.3d at 24
    ; see, e.g., United States v. Meises, 
    645 F.3d 5
    , 14-16, 18 (1st Cir. 2011) (improper overview where government's
    witness     testified,       without   personal      knowledge,      that    certain
    defendants       were   members   of   the     charged    drug      conspiracy   and
    identified their specific roles within that conspiracy); Flores-de-
    
    Jesús, 569 F.3d at 14-15
    ,   17-27    (government's        first   witness
    improperly circled photographs of the three defendants appearing on
    a   chart    depicting       twenty-five     members     of   the    alleged     drug
    conspiracy and told the jury that one defendant was a "seller" and
    -12-
    the other two were "both sellers and runners" in that conspiracy);
    
    Casas, 356 F.3d at 118-20
    (government agent, going "well beyond his
    personal knowledge," improperly "testified that there was a drug
    trafficking organization, . . . that all four of the defendants
    were members of this organization, and that the organization
    handled specific massive quantities of cocaine and heroin").
    Nevertheless, we have not imposed a blanket ban on all
    overview testimony.    Rather, we have recognized that "[t]here may
    be value in having a case agent describe the course of his
    investigation in order to set the stage for the testimony to come
    about the nature of the conspiracy and the defendants involved."
    
    Flores-de-Jesús, 569 F.3d at 19
    (emphasis added).          A government
    agent's testimony, when based on his personal knowledge and limited
    to   a   description   of   his   activities   in   the   course   of    an
    investigation, may in some circumstances be helpful to provide
    background information and to explain how and why agents became
    involved with a particular defendant in the first place.                
    Id. (quoting United
    States v. Goosby, 
    523 F.3d 632
    , 638 (6th Cir.
    2008)); see also 
    Rosado-Pérez, 605 F.3d at 55-56
    (finding that
    government witness's testimony, based on his personal knowledge,
    about how surveillance "videos and wiretap recording fit into the
    rest of the conspiracy . . . [was] not overview testimony and [was]
    properly admitted").
    -13-
    What is not acceptable is when "a government witness
    testifies about the results of a criminal investigation, usually
    including aspects of the investigation [that] the witness did not
    participate in"--and therefore lacks personal knowledge of--"before
    the government has presented evidence."        
    Rosado-Pérez, 605 F.3d at 55
    .    Indeed, such testimony is nothing more than an improper
    attempt   to   transmute    the   prosecutor's     opening   argument    into
    substantive evidence.       See 
    Flores-De-Jesus, 569 F.3d at 17
    ("The
    law already provides an adequate vehicle for the government to
    'help' the jury gain an overview of anticipated evidence as well as
    a preview of its theory of each defendant's culpability: the
    opening statement.") (quoting United States v. Garcia, 
    413 F.3d 201
    , 214 (2d Cir. 2005) (internal quotation marks and alteration
    omitted)).
    With these principles in mind, we turn to the testimony
    Etienne challenges as improper overview testimony.           The government
    opened its case with Mercer.      After briefly describing his twenty-
    two years of law enforcement experience and his assignment to
    investigate "gangs, guns and drugs" on the North Shore, Mercer
    explained how he came to investigate Jean-Francois and Etienne.
    Mercer testified that he first secured Smith's cooperation, and
    then   Smith   identified   Jean-Francois    and    Etienne,   among    other
    individuals, as potential targets.          Mercer explained that Smith
    knew who Etienne and Jean-Francois were because they were "past
    -14-
    criminal associates that he had done business with, drug business
    with in the past."            He also said that Smith referred to Etienne and
    Jean-Francois by their respective nicknames, "Smoke" and "Black."
    Mercer      then    proceeded    to    discuss   the   ATF's   general
    investigatory          techniques,       which    included     mobile    surveillance,
    recording phone calls, and using body wires to monitor and record
    in-person conversations.               Mercer described the specific steps he
    took to set up and implement the July 22 and July 30 drug buys,
    which included instructing Smith to make telephone calls to Jean-
    Francois and Etienne.                Along the way, he confirmed that he had
    listened         to    the     various       recorded    telephone      and   body-wire
    conversations between Smith, Jean-Francois, and Etienne in real-
    time       and   had    reviewed       the    recordings    afterwards.         He   also
    summarized portions of the recordings as part of the government's
    introduction into evidence of the transcript of each recorded
    conversation.4
    On   appeal,       Etienne   argues    that   the   government      used
    Mercer's testimony to do exactly what we have prohibited.                              He
    specifically complains about Mercer's testimony that Smith knew
    Jean-Francois and Etienne as past criminal associates with whom he
    had done drug business before, along with Mercer's testimony that
    he wanted to use Smith to identify and go after people who were
    4
    None of the actual recordings were played while Mercer was
    on the stand.
    -15-
    supplying Smith with drugs.     According to Etienne, his testimony
    was "tantamount to telling the jury that a conspiracy existed and
    that Etienne was part of it."    He further intimates that Mercer's
    testimony about the nature of Smith's relationship with himself and
    Jean-Francois was improper because it "necessarily derived from
    [Smith's] hearsay accusation."
    In response, the government tells us Mercer did not offer
    an improper overview.      It says Mercer's testimony was proper
    because he based it on his personal knowledge of the investigation
    and did not opine on Etienne's role in the charged conspiracy. The
    government also argues that Mercer's testimony about Smith's past
    dealings with Etienne and Jean-Francois did not violate the rule
    against hearsay:     per the government, Mercer's testimony had the
    nonhearsay purpose of providing background and explaining to the
    jury how the ATF came to investigate Etienne in the first place.
    The record here leads us to side with the government.
    Mercer's testimony is not akin to the type of overview testimony in
    which a government agent kicks off the prosecution's case with a
    blanket assertion that a defendant was a member of the charged
    conspiracy, and which we sharply criticized in Meises, Flores-De-
    Jesus, and Casas.5    With respect to the conspiracy charged here,
    5
    Mercer's testimony that Smith was familiar with Etienne and
    Jean-Francois because they were "past" criminal associates gives us
    some pause. This testimony regarding Etienne's prior bad acts was
    of questionable relevance. It also ran the danger of prejudicing
    the jury and encouraging it to convict based on Etienne's uncharged
    -16-
    Mercer testified to the activities he undertook in setting up each
    July   2009    drug      deal.      Mercer    described    his   contemporaneous
    monitoring of conversations involving Smith and Etienne or Smith
    and Jean-Francois, explained to the jury what the speakers were
    talking about in each conversation, and stated that Smith and
    Etienne ultimately exchanged money for drugs on July 22 and July
    30.    Having thoroughly reviewed the record, we are satisfied that
    at least most of Mercer's testimony about Etienne's involvement was
    based on his personal knowledge and "represented the fruits of
    first-hand police work."           United States v. Valdivia, 
    680 F.3d 33
    ,
    48 (1st Cir. 2012).            To the extent that there is any ambiguity
    about Mercer's knowledge of prior acts, we will not, on plain error
    review, permit Etienne to gain any benefit from his choice not to
    clarify the ambiguity.            Accordingly, we conclude Mercer did not
    offer improper overview testimony.                See 
    Rosado-Pérez, 605 F.3d at 55-56
    .
    As   for   the     hearsay    objection   embedded   in   Etienne's
    argument, Etienne did not raise a hearsay objection at trial and
    the issue is waived here given that he failed to develop it on
    appeal.    See United States v. Zannino, 
    895 F.2d 1
    , 17 (1st Cir.
    conduct. Although we have analyzed the "propriety of [a] trial
    judge's admission of prior bad acts evidence under the aegis of
    Rules 404(b) and 403 of the Federal Rules of Evidence," United
    States v. Doe, 
    741 F.3d 217
    , 229 (1st Cir. 2013), cert. denied, No.
    13-10728, 
    2014 WL 2919345
    (Oct. 6, 2014), Etienne did not argue at
    trial, nor does he assert on appeal, that the testimony should have
    been barred by either or both of these rules.
    -17-
    1990) ("[A] litigant has an obligation to spell out [his] arguments
    squarely      and      distinctly,   or   else   forever   hold   [his]   peace."
    (internal quotation marks omitted)).6
    Summing up, we conclude that Mercer did not provide
    improper overview testimony.
    3.   Interpretive Testimony
    Moving on, Etienne argues the trial judge erred in
    permitting Mercer and Bruce to offer specific instances of what he
    dubs "interpretive" testimony. He complains both were permitted to
    testify to their "interpretations" of the recorded conversations.
    By this he means that the law enforcement officers told the jury
    what       they    thought   the   conversations    were   about.    They    also
    interpreted the meaning of words they said had to do with drug
    sales, and testified that an exchange of drugs took place during
    certain conversations.
    6
    We also note that Etienne may have waived the objection to
    overview testimony entirely because the lack of evidentiary
    challenges throughout trial appears to be the result of his
    conscious litigation tactics. See United States v. Washington, 
    434 F.3d 7
    , 11 (1st Cir. 2006) (finding waiver where "counsel made a
    deliberate strategic choice" to admit certain evidence). Etienne's
    counsel filed a pre-trial motion in limine seeking to preclude
    overview testimony and was clearly sensitive to the pitfalls of
    improper overview testimony. During the hearing on his motion,
    defense counsel explicitly agreed with the trial judge's statements
    that "[s]ome general context is appropriate," and that Mercer's
    testimony is "something we have to police as we go along."
    Mercer's actual testimony, in defense counsel's eyes, apparently
    never crossed that line. This provides yet another basis for our
    refusal to fault the trial judge.
    -18-
    Etienne argues this testimony, which we will discuss in
    more detail momentarily, went hand-in-hand with Mercer's improperly
    admitted overview testimony and was especially prejudicial because
    Smith offered his own interpretation (which parroted Mercer's) as
    to what transpired during those conversations.            In Etienne's view,
    this can only mean the law enforcement officers' testimony unfairly
    "bolstered" Smith's testimony and served to shore up his "shaky
    credibility." Taking a contrary viewpoint, the government says the
    testimony    constituted   permissible     lay   opinion    based   upon   the
    officers' personal knowledge of the drug trade, and particularly,
    its parlance.
    "[W]e have long held that government witnesses with
    experience in drug investigations may explain the drug trade and
    translate coded language for juries, either through lay or, if
    qualified, expert testimony."         
    Rosado-Pérez, 605 F.3d at 56
    .
    Interpretive testimony, we have made clear, "is not overview
    testimony and is properly admitted."        
    Id. Although Etienne
      raises   the    issue    of   interpretive
    testimony, he cites little authority in support of his belief that
    the specific testimony at issue here was improper. He has not come
    forward with a single case in which we have reversed a conviction
    on plain error review due to erroneously admitted interpretive
    testimony.    To his credit, Etienne forthrightly acknowledges that
    in the case he highlights most we actually upheld the admission of
    -19-
    the challenged interpretive testimony.           See United States v.
    Albertelli, 
    687 F.3d 439
    , 446-50 (1st Cir. 2012).
    We have reviewed the specific testimony challenged as
    interpretive, and only a few portions can be fairly described as
    such.   First is Mercer's testimony regarding the July 30 deal and
    several   related   conversations,   all   of   which   he   monitored   in
    realtime.    Mercer told the jury Smith and Jean-Francois had a
    telephone conversation in which Jean-Francois used the word "cake"
    to mean "money."     When Smith met with Etienne later, the two men
    used the number "13" to mean the price of the drugs, $1300.        Mercer
    also testified that while Smith and Etienne were discussing the
    price, "[y]ou could hear [over the recording] what appeared to be
    the sound of money being handed over, counted out, cash."
    We are satisfied the district court did not plainly err
    in admitting this testimony based upon Mercer's twenty-two years of
    experience as an ATF agent and his contemporaneous monitoring of
    the conversations as they occurred.
    Next is Bruce's testimony in which he told the jury that
    he monitored Smith's body wire on July 30 and "heard what sounded
    like a deal being consummated after initial greetings" between
    Smith and Etienne.    At the time of trial, Bruce had been a state
    trooper for almost twenty years, with more than a decade of
    experience as a drug detective.      He had been actively involved in
    the ATF's investigation of Etienne and Jean-Francois, and he
    -20-
    monitored these particular conversations in realtime.       The nature
    of Bruce's testimony differed little from Mercer's.       Accordingly,
    we cannot say the allowance of his interpretive testimony was
    error, plain or otherwise.
    4.   Mercer's Opinion of Guilt
    Etienne next claims Mercer improperly "expressed his view
    that the government had proved beyond a reasonable doubt that there
    existed a conspiracy and Etienne was part of it" before opining
    that "the jury could convict" Etienne.       Etienne points to Mercer's
    testimony on re-cross examination about Smith's obligation to
    testify truthfully in accordance with his cooperation agreement.
    This testimony came only after defense counsel asked several
    questions geared at pinning down exactly who would determine
    whether Smith had lied on the stand. Etienne never moved to strike
    it as non-responsive, nor did he ask the district judge to instruct
    the jury that they alone determine whether a witness's testimony is
    credible.    We'll set forth the exchange to put it in context.
    Q. [By defense counsel] Who determines whether
    or not [Smith's] testimony is truthful?
    A.   [Mercer] I guess the jury.
    Q.   How about the government?
    A. I think ultimately the jury. Again, if we
    -- if I thought that he lied and I could prove
    it, I would bring it to the attention of the
    U.S. Attorney personally and I guess they'll
    make their own evaluation at some point.
    -21-
    Q.    So, then if Mr. Etienne doesn't get
    convicted, then you assume that the jury
    thinks [Smith] is lying and if he doesn't get
    a conviction in this case, [Smith] gets
    charged with everything going back to 2003,
    2004, when he bought the guns in Woburn with
    Paul, right?
    A.   No.
    Q.   Isn't that what you just testified to?
    A.    If your defendant -- if your client
    [Etienne] is found not guilty, that's the
    jury's decision.     That doesn't mean that
    [Smith] lied. It may be we didn't have enough
    evidence, which I don't -- I think we have --
    Q.    So that it won't be the jury that
    determines whether or not [Smith] is lying or
    telling the truth, it's going to be the
    government, the one that he made the deal
    with, who determines whether or not he's
    testified truthfully?
    A.   That will be one of the factors, yes.
    Etienne's argument that this testimony mandates a new
    trial is utterly without merit.        Defense counsel elicited the
    complained-of testimony, and even then only after an extended back-
    and-forth with Mercer.    Counsel not only opened the door to this
    response through his line of inquiry, but practically begged Mercer
    to walk through it by continuing to pursue it.      We will not now
    suffer to hear Etienne complain of a purported error for which he
    alone was responsible.7
    7
    In a single paragraph of his brief, Etienne cherry-picks
    several unobjected-to statements from the prosecutor's opening and
    closing arguments, then advances the notion that the government
    presented its case in such a way as to improperly vouch for Smith's
    -22-
    5.   Identification Testimony
    Finally,    we   address     Etienne's   arguments     regarding
    Mercer's and Bruce's testimony identifying the speakers heard in
    various   recorded      conversations.        Generally    speaking,   in   the
    complained-of testimony the officers identified either Etienne's or
    Jean-Francois's voice on those recordings.                Etienne asserts (1)
    that this testimony was inadmissible because the government failed
    to lay a foundation for either law enforcement officer's ability to
    identify any of the voices in the recordings, and (2) the officers'
    opinions were not helpful to the jury (and should not have been
    admitted) because Smith made the same identifications when he took
    the stand.
    In rejoinder, the government argues that the lack of a
    proper foundation for Mercer's identification testimony cannot be
    presumed in the absence of an objection, which would have led to an
    on-the-record     proffer     of   a   foundation.    As     for   Bruce,   the
    government argues that his unobjected-to testimony established a
    foundation based on his opportunity to observe and hear both Smith
    and Etienne during the investigation. Finally, the government says
    that even if any of the testimony was admitted in error, Etienne is
    testimony. Although he expounds on this theory at greater length
    in his reply brief, Etienne has provided us with no authority for
    his contention that the disparate statements were improper or that
    they form any basis for reversal on plain error review.
    Accordingly, we find any potential argument along these lines to be
    waived. See United States v. Zannino, 
    895 F.2d 1
    , 17 (1st Cir.
    1990).
    -23-
    unable to satisfy the third or fourth prongs of plain error review
    because Smith himself was competent to identify the individuals in
    the recordings, he did so on the stand, and Smith's testimony was
    consistent with that of Mercer and Bruce.
    Because the government did not seek to qualify either
    Mercer or Bruce as an expert, we analyze their identification
    testimony as lay opinion under Federal Rule of Evidence 701. To be
    admissible, lay opinion must "be 'helpful to clearly understanding
    the witness' testimony or to determining a fact in issue,'" United
    States v. Díaz-Arias, 
    717 F.3d 1
    , 11-12 (1st Cir. 2013) (quoting
    Fed. R. Evid. 701(b)), and "'rationally based on the witness's
    perception,'" 
    id. at 13.
    (quoting Fed. R. Evid. 701(a)).   We have
    determined that a lay opinion is not "'helpful' to the jury 'when
    the jury can readily draw the necessary inferences and conclusions
    without the aid of the opinion.'" 
    Id. at 12
    (quoting United States
    v. Sanabria, 
    645 F.3d 5
    05, 515 (1st Cir. 2011)).
    Moreover, and despite Etienne's failure to raise the
    issue at trial, the government bore the "burden [of laying] a
    foundation that established the basis of [Mercer's and Bruce's]
    knowledge or opinion in connection with all of [their] testimony."
    United States v. Vázquez-Rivera, 
    665 F.3d 351
    , 361 (1st Cir. 2011);
    see also 
    Rosado-Pérez, 605 F.3d at 55
    ("A foundation should be laid
    establishing the basis of a witness's knowledge, opinion, or
    expertise.").
    -24-
    With these principles in mind, we may quickly dispose of
    the challenge to Bruce's testimony. The identifications Bruce made
    were of voices on the body wire recordings from July 22 and 30.
    Bruce testified that he established surveillance of Etienne's home
    on July 22 in a spot thirty to forty-five feet away where he had an
    unobstructed view.       Bruce testified he had met Smith before that
    day, and that Smith's body wire--which allowed Bruce to hear his
    conversations "in realtime"--was "work[ing] very well."                 Further,
    Bruce personally observed Etienne standing on his porch when Smith
    arrived at his Hollingsworth Street home.           Bruce watched as Smith
    approached and exchanged greetings with Etienne, after which they
    both went inside, whereupon he could no longer see them but could
    still "hear what was being said," thanks to Smith's body wire.
    Contrary to Etienne's protestations, Bruce's testimony
    adequately established that he was capable of identifying Etienne's
    voice on the recordings by virtue of his previous familiarity with
    Smith   coupled   with    his   ability    to   observe    and   hear   Smith's
    interaction with Etienne on the front porch.              Bruce's opinion was
    clearly helpful to the jury.        Not only did it assist the jury--
    which was not familiar with the voices of Smith, Jean-Francois, or
    Etienne--in determining for itself who said what in the recordings,
    -25-
    it also tended to show Smith spoke with Etienne and not some other
    person inside the house.8     There was no error, plain or otherwise.
    As for Mercer, he identified the recorded voices of both
    Etienne and Jean-Francois in telephone conversations and on the
    body wire.       The government, as Etienne contends, did not lay a
    foundation for this testimony, and on appeal it does not argue it
    did.       Instead, the government offers speculation as to potential
    foundational testimony that Mercer may have offered had he been
    asked.       Speculation is not foundation evidence, and we find the
    government's failure to elicit Mercer's identification testimony
    without attempting to lay a foundation was a plain and obvious
    error.
    That being said, the third and fourth prongs of our plain
    error review nonetheless block Etienne's path to relief.            Recall
    that in addition to demonstrating plain error, Etienne must also
    prove the error affected his substantial rights and "seriously
    affect[ed] the fairness, integrity, or public reputation of [the]
    judicial      proceedings."    
    Whitney, 524 F.3d at 140
      (internal
    quotation marks omitted).        On this record, he is able to do
    neither.
    8
    We, therefore, reject Etienne's argument that because the
    recordings spoke for themselves, and because Smith provided his own
    interpretation of what was going on, the district judge should have
    excluded Mercer's and Bruce's interpretive testimony as not helpful
    to the jury.
    -26-
    Although the government failed to lay a foundation for
    Mercer's identification testimony, it did do so for Smith's and
    Bruce's testimony.        Smith, who had actually participated in the
    conversations, made his voice identifications while the actual
    tapes were playing, while Mercer and Bruce simply testified to
    their recollections as to who said what in each conversation.                        All
    three    offered   consistent          testimony,     and   each     was   subject    to
    rigorous cross-examination. Given that Etienne had the opportunity
    to expose any weaknesses in the testimony, we can not say the
    government's       failure        to    lay      a    foundation      for    Mercer's
    identification testimony affected Etienne's substantial rights.
    The    strength       of    the    evidence     against    Etienne   only
    reinforces this conclusion.              The indictment charged Etienne as a
    member of a drug distribution conspiracy in violation of 21 U.S.C.
    § 846.     To convict, the government had to prove that Etienne
    "entered into an agreement with another to commit a crime," here,
    an agreement with Jean-Francois to distribute crack. United States
    v. Innamorati, 
    996 F.2d 456
    , 470-71 (1st Cir. 1993).
    The     recordings            established        that      Jean-Francois
    orchestrated each drug deal and instructed Smith to make the
    physical exchange with Etienne. Etienne's presence at the time and
    place where Jean-Francois told Smith to pick up the drugs, combined
    with his preexisting awareness of the price (including the last-
    minute   $50   increase      on    July       22),   is   powerful    circumstantial
    -27-
    evidence against him.    See, e.g., United States v. Andújar-Basco,
    
    488 F.3d 549
    , 558 (1st Cir. 2007) (The defendant's "very arrival at
    the appointed time and place designated for the transfer of
    [certain amounts of cash] is strong circumstantial evidence of his
    involvement in the conspiracy.").         The recordings themselves, as
    heard by the jury, established that the speakers used drug lingo,
    and they could be heard consummating a drug deal as well.
    Additional evidence came from the parties' stipulations
    as to drug quantity.    While we will have occasion to discuss them
    in more detail later, the parties stipulated--and the jury was told
    during the government's case-in-chief--that Smith turned baggies
    over to law enforcement containing 15.25 grams and 27.82 grams of
    crack on July 22 and July 30, respectively.              As one ounce is
    approximately 28.35 grams, Smith obtained approximately half-an-
    ounce of crack on July 22, and just shy of one ounce on July 30.
    This comported with the recorded conversations in which Smith told
    Jean-Francois how much he was looking for on each occasion, and
    constituted   further   evidence   of     Etienne's   involvement   in   the
    conspiracy.
    All told, the evidence of guilt was overwhelming. We are
    satisfied therefore, that the erroneous admission of Mercer's
    identification testimony did not affect Etienne's substantial
    rights or seriously impair the fairness, integrity, or public
    reputation of his trial.
    -28-
    B. Alleyne
    Because Etienne is unable to show he is entitled to a new
    trial, we move on to address his argument that we must vacate his
    seventy-month sentence.      Etienne tells us the district court erred
    by imposing a statutory minimum mandatory sentence in violation of
    his Sixth Amendment rights as articulated by the Supreme Court in
    Alleyne v. United States, 
    133 S. Ct. 2151
    (2013).        Etienne did not
    object to the imposition of a minimum sentence at sentencing, and
    as with his evidentiary challenges, he concedes that plain error
    review applies here.    Before getting into his argument, we provide
    a brief primer on Alleyne.
    "In   Alleyne,   the   Supreme   Court   extended   the   rule
    [announced in Apprendi v. New Jersey, 
    530 U.S. 466
    , 490 (2000),]
    requiring a jury to find, beyond a reasonable doubt, any fact that
    increases a maximum statutory penalty to any fact that requires
    imposing a statutory minimum penalty."        United States v. Doe, 
    741 F.3d 217
    , 233 (1st Cir. 2013), cert. denied, No. 13-10728, 
    2014 WL 2919345
    (Oct. 6, 2014) (citing 
    Alleyne, 133 S. Ct. at 2160
    ).
    Alleyne recognized that "a fact triggering a mandatory minimum
    [sentence] alters the prescribed range of sentences to which a
    criminal defendant is exposed."           
    Alleyne, 133 S. Ct. at 2160
    .
    Therefore, "a fact increasing either end of the [sentencing] range
    produces a new penalty and constitutes an ingredient of the
    offense."   
    Id. In today's
    post-Alleyne world, any such fact "must
    -29-
    be submitted to and found beyond a reasonable doubt by a jury, not
    by a judge utilizing a preponderance of the evidence standard at a
    sentencing hearing."         
    Doe, 741 F.3d at 233
    .
    Here, the five-year minimum sentence was triggered by the
    amount of drugs involved in the conspiracy.                    At the time the
    indictment issued, the conspiracy only needed to have involved 5
    grams of crack for the five-year minimum to apply.                     The parties
    agree though that an intervening statutory amendment upped the ante
    and required the government to convince the jury that it involved
    at    least   28     grams   to   require   a   minimum   five-year      sentence.
    Although the original indictment alleged the conspiracy involved
    more than 5 grams of crack, the government declined to seek a
    superseding indictment reflective of the new 28-gram threshold.
    At sentencing, the district judge stated, "[w]ell, the
    jury didn't find it, but as a sentencing matter there's little
    question      that     the   quantities     involved,     as    stated    in   the
    [Presentence Report], exceed 28 grams."               The prosecutor replied
    that this was "[c]orrect," while the defendant made no response.
    The   government       and   defendant    proceeded   with     their    sentencing
    arguments (the defendant's focused on what he considered to be his
    minor involvement with the drug deals), with no discussion as to
    the drug quantities involved in the two transactions.                    The judge
    noted that the United States Sentencing Guidelines recommended a
    sentence between sixty-three and seventy-eight months, and he
    -30-
    opined that "the Guidelines themselves do a good job of considering
    and recognizing the factors that the [sentencing] statute sets
    out."   The judge then imposed a seventy-month sentence.           While the
    sentence ultimately imposed exceeded the five-year minimum, there
    is no doubt the district judge considered the minimum sentence to
    have been triggered by the involved drug quantities.
    According to Etienne, the district judge erred in doing
    so because the jury did not make any determination as to the amount
    of drugs involved in either transaction. Further, he states, there
    was no evidence as to drug composition or weight at trial.                And
    because the judge, as opposed to the jury, improperly made the
    finding it matters not that the district judge imposed a within-
    Guidelines sentence that exceeded the statutory minimum.                 Thus,
    Etienne urges us to remand for resentencing without regard to the
    statutory   minimum   (and,     presumably,    without   taking    any    drug
    quantity into consideration).
    The   government,    somewhat    surprisingly,   concedes      the
    district court committed a clear or obvious error by imposing a
    mandatory minimum sentence. It focuses its argument instead on the
    third and fourth prongs of plain error review, contending that
    Etienne is unable to show the error affected his substantial rights
    or seriously impaired the fairness, integrity, or public reputation
    of the judicial proceedings.          The government argues none of
    Etienne's    substantial   rights     were    affected    thanks    to    the
    -31-
    uncontroverted evidence at trial that the two transactions involved
    more than enough crack to trigger the five-year minimum.            Further,
    the government says that no plain error can be shown because the
    sentence imposed--seventy months--was based upon the Guidelines
    range and the 18 U.S.C. § 3553(a) factors, not on the court's
    determination of drug quantity.
    Although the parties agree an Alleyne error occurred,
    their stipulation on this question of law is of no import.                 See
    United    States    v.   Teeter,   
    257 F.3d 14
    ,   28   (1st   Cir.    2001)
    ("Stipulations about legal issues . . . normally are not binding on
    a court.").    Accordingly, we take a de novo look at the Alleyne
    issue.
    What happened here is the parties stipulated to several
    facts prior to trial, including drug weight and composition.               The
    government introduced those stipulations in its case-in-chief
    during Mercer's testimony, each time without objection.                  Before
    mentioning the first stipulated fact, the prosecutor addressed the
    court, stating "at this time we would ask, and we have agreed with
    [the]    defense,   to   introduce   portions    of   the   stipulation      of
    undisputed facts."       The trial judge made the following response:
    Okay. Let me just say to the jury, sometimes
    facts are at issue in the case, sometimes
    they're not. The parties may sometimes agree
    that some things are factual. So, they enter
    into what we call a stipulation, which is
    evidence of the facts that they would recite.
    That means there is no controversy between the
    parties about these matters.
    -32-
    The prosecutor proceeded to inform the jury that the parties agreed
    that in July of 2009 Etienne (1) lived in Lynn, Massachusetts, and
    (2) was the primary caretaker and had sole physical custody of a
    young   daughter.      He    then   continued     his   line   of   questioning
    regarding the first drug deal on July 22.
    As Mercer concluded his testimony about that deal, the
    prosecutor entered the following stipulation into evidence without
    objection:      "The white substance which was contained in a plastic
    baggie provided by [Smith] to federal agents on July 22, 2009 was
    cocaine base, also known as crack, and the net weight of the
    cocaine base itself was 15.25 grams."           Later on, while Mercer was
    still on the stand, the prosecutor similarly read the following
    stipulated facts about the second drug buy: "The white substance
    which was contained in a plastic baggie provided by [Smith] to
    federal agents on July 30th, 2009, was cocaine base, also known as
    crack, and the net weight of the cocaine base itself was 27.82
    grams."
    Following both sides' closing arguments, the trial judge
    gave    the    following    jury    instruction    regarding    the   parties'
    stipulations:
    Now, you have some different categories of
    evidence. You have some stipulations, what we
    call, and they were read at various places and
    you'll have, I believe, a copy of the document
    which   records   the   stipulations.      The
    stipulations are agreements between the
    government and the defendant that you may take
    the facts stipulated to as being established.
    -33-
    Those are not in         contest.       App.    at   316
    (emphasis added).
    Etienne did not object to this instruction, but even if he had, the
    instruction was correct. It is well-established that a stipulation
    is a form of evidence that "should be presented to the jury, in
    whatever manner the parties and the courts agree to, prior to the
    close of evidence."       United States v. Pratt, 
    568 F.3d 11
    , 18 n.6
    (1st Cir. 2009).
    Thus, the prosecution introduced evidence during its
    case-in-chief showing that the two transactions together yielded a
    total   of   43.07    grams    of   crack.     Not   only   was   the    evidence
    uncontested,    Etienne       expressly    agreed    to   it.     This   clearly
    established     the    minimum      drug     quantity     attributable    and/or
    foreseeable to Etienne during his involvement in the conspiracy.
    This number easily exceeded the 28 grams required to trigger a
    minimum five-year sentence.
    The drug quantity cases upon which Etienne relies all
    involve situations in which the drug quantity evidence did not come
    in at trial.         Those cases necessarily involved an Apprendi or
    Alleyne violation, as the ultimate drug quantity findings were made
    by the judge at sentencing. See United States v. Zavala-Marti, 
    715 F.3d 44
    , 52-54 (1st Cir. 2013) (Apprendi violation where judge's
    drug quantity finding at sentencing exceeded amount set forth in
    the indictment and triggered a harsher maximum jail term); United
    States v. Harakaly, 
    734 F.3d 88
    , 96-97 (1st Cir. 2013) (Alleyne
    -34-
    error where drug quantity triggering mandatory minimum was neither
    alleged in indictment nor stipulated at time guilty plea entered);
    United States v. Delgado-Marrero, 
    744 F.3d 167
    , 183-84, 188-89 (1st
    Cir. 2014) (Alleyne error where judge imposed enhanced minimum
    after jury answered postverdict "special" question as to drug
    quantity, but had not been instructed its finding must be beyond a
    reasonable doubt); see also United States v. Barnes, --- F.3d ---,
    No. 11-1093, 
    2014 WL 5072846
    , at *2 (1st Cir. Oct. 10, 2014)
    (Alleyne error where judge found drug quantity triggering mandatory
    minimum by the preponderance of the evidence).   Here, by contrast,
    Etienne himself affirmatively relieved the government of the burden
    of proof with respect to drug quantity.
    "Factfinding premised on a defendant's admission is not
    a practice invalidated by Apprendi," Alleyne's pre-cursor.   United
    States v. Eirby, 
    515 F.3d 31
    , 36 (1st Cir. 2008).     By that same
    token, neither is it prohibited by Alleyne, which merely extends
    Apprendi's rule to facts that trigger mandatory minimum sentences.
    Given Etienne's admission that the two transactions involved more
    than 28 grams of crack, the district judge's imposition of a
    minimum sentence simply did not involve the type of "judicial
    factfinding" the Supreme Court found concerning in Alleyne.      We
    -35-
    conclude, therefore, that Etienne's sentence is not violative of
    Alleyne.9
    In a last-gasp effort to undo his stipulations, Etienne
    cites United States v. Torres-Rosario, 
    658 F.3d 110
    , 116 (1st Cir.
    2011), to tell us that "courts may excuse waivers and disregard
    stipulations where justice so requires."             He then asks us to
    disregard his stipulations with respect to drug quantity. Etienne,
    though, does not specify how or why justice requires that he be
    relieved of the stipulations.       Moreover, he conveniently ignores
    our observation in the very case he cites that, "where a party
    makes an explicit and specific concession, practical reasons favor
    holding a party to such a concession, whether given in exchange for
    a quid pro quo or merely to avoid evidence that the party would
    prefer not to be presented."      
    Id. Etienne clearly
    stood to benefit from these stipulations.
    First,   they   reduced   the   number    of   witnesses   against   him   by
    relieving the government of its burden to call witnesses to
    establish the weight and chemical makeup of the substances Smith
    9
    True, the district judge at sentencing observed that
    although "the jury didn't find it, but as a sentencing matter
    there's little question that the quantities involved, as reported
    in the [Presentence Report], exceed 28 grams." The reason "the
    jury didn't find it," of course, is because Etienne had agreed to
    the drug quantities, thereby leaving nothing for the jury to do on
    that issue. Regardless, we may affirm the district court on any
    basis appearing in the record, such as Etienne's stipulations.
    United States v. Rodríguez-Peña, 
    470 F.3d 431
    , 433 (1st Cir. 2006)
    (per curiam). We do so here.
    -36-
    turned over to law enforcement.10       Such testimony would have
    distracted from the defense strategy of focusing solely on Smith
    and his motivation for, as Etienne saw it, feeding him to the ATF
    in order to save his own skin.   Indeed, testimony from one or more
    experts that the substances Smith turned over to law enforcement
    were what he had purported them to be could only serve to enhance
    Smith's credibility.
    We also note the government indicated in its trial
    memorandum that, should the jury convict, it would seek to prove at
    sentencing "that the defendants [i.e., Jean-Francois and Etienne]
    conspired to distribute at least 280 grams of [crack], thus
    triggering a 10-year mandatory minimum sentence under [21 U.S.C.]
    § 841."11 This put Etienne on notice that the government likely had
    evidence beyond the two sales in July 2009. Had Etienne challenged
    drug composition or quantity, the government may have introduced
    10
    The government had stated in its trial memorandum (filed
    before the parties stipulated to drug quantity) that it intended to
    call an expert witness to testify that the substances Etienne sold
    to Smith in July 2009 together contained more than 28 grams of
    crack.
    11
    A drug conspiracy involving 280 grams of crack actually
    exposed Etienne to a potential life sentence.       See 21 U.S.C.
    § 841(b)(1)(A)(iii) (providing ten-year to life sentence as
    punishment for any person who knowingly or intentionally
    distributes or possesses with intent to distribute at least 280
    grams of crack); 21 U.S.C. § 846 (rendering any person who
    "conspires to commit any offense defined in this subchapter . . .
    subject to the same penalties as those prescribed for the offense,
    the commission of which was the object of the attempt or
    conspiracy").
    -37-
    evidence of additional drug sales.        This obviously would have been
    harmful to Etienne's interests, and stipulating to the lower drug
    quantity forestalled this possibility.
    As it turns out, and although Alleyne had not yet been
    decided when Etienne was sentenced, the government did not attempt
    to prove at sentencing that the conspiracy involved at least 280
    grams of crack.    See United States v. Mills, 
    710 F.3d 5
    , 15 (1st
    Cir.   2013)   (recognizing   in   a   pre-Alleyne   opinion   that   drug
    quantities may be found at sentencing by a preponderance of the
    evidence). At the time of trial, Etienne would have understood the
    government only needed to introduce enough evidence to obtain a
    conviction on the conspiracy charge, but could then introduce
    evidence of drug quantity at sentencing in an attempt to trigger
    the ten-year minimum.     Although the record does not explicitly
    reveal why Etienne decided to stipulate to drug composition and
    quantity at trial, it is noteworthy that, after he did so, the
    government chose not to seek the possible ten-year minimum at
    sentencing.
    Etienne obviously felt the benefits of stipulating to
    drug quantity warranted giving up the opportunity to challenge drug
    weight and composition. That he has come to regret his stipulation
    is not grounds for relieving him of its effect.          Doing so would
    allow Etienne to reap its benefits at trial, only to turn around
    and seek to reverse his conviction because the trial proceeded in
    -38-
    the exact manner he wanted.    Etienne's position boils down to an
    absurd desire to have his cake (the sugar-based kind, that is) and
    eat it too.   We, therefore, decline to permit Etienne to take back
    his drug quantity stipulations.
    III. CONCLUSION
    Etienne's conviction and sentence are affirmed.
    -39-