United States v. Encarnacion ( 2022 )


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  •             United States Court of Appeals
    For the First Circuit
    No. 21-1165
    UNITED STATES OF AMERICA,
    Appellee,
    v.
    DROEL JARED ENCARNACION,
    Defendant, Appellant.
    APPEAL FROM THE UNITED STATES DISTRICT COURT
    FOR THE DISTRICT OF MASSACHUSETTS
    [Hon. Allison D. Burroughs, U.S. District Judge]
    Before
    Lynch and Selya, Circuit Judges,
    and McConnell,* District Judge.
    Murat Erkan, with whom Erkan & Associates was on brief, for
    appellant.
    Karen L. Eisenstadt, Assistant United States Attorney, with
    whom Nathaniel R. Mendell, Acting United States Attorney, was on
    brief, for appellee.
    February 18, 2022
    *   Of the District of Rhode Island, sitting by designation.
    SELYA, Circuit Judge.          Defendant-appellant Droel Jared
    Encarnacion   challenges     his    convictions      for    certain   drug-
    trafficking offenses.    In support, he questions the propriety of
    the wiretap that led to his apprehension, the district court's
    handling of the juror-selection process, and two of the court's
    evidentiary rulings.    Concluding, as we do, that the defendant is
    tilling barren soil, we affirm.
    I
    We begin by rehearsing the facts and travel of the case.
    On August 2, 2018, Michael Patterson, a local police officer
    delegated to work as part of a Drug Enforcement Administration
    (DEA) task force, sought and received authorization from the
    district court to intercept wire and electronic communications
    associated with identified telephone numbers linked to suspected
    drug-traffickers, including Robin Martinez Suazo (Suazo).             Suazo
    was no stranger to the DEA:        he had come to its attention during
    an earlier drug-trafficking probe.
    Before   seeking     this        wiretap   authorization,     the
    government had conducted its investigation through the use of a
    variety of techniques. It had come to believe that Suazo regularly
    sought to import narcotics into Massachusetts.             It had, however,
    made only limited progress in discovering the wider parameters of
    his drug-trafficking activities and the structure of his network.
    - 2 -
    The wiretap on Suazo's telephone quickly bore fruit.1
    On five separate dates in August and September of 2018, the DEA
    intercepted calls between Suazo and a man subsequently identified
    as the defendant.    During the first four calls, the pair discussed
    prices, quantities, and varieties of narcotics, frequently using
    guarded terms and references (e.g., "blue ones," "white"), but
    sometimes being more explicit.     In one such call, Suazo sketched
    a scenario in which a third party would purchase drugs in Utah (a
    "border zone" where prices were low) and resell them for more money
    in the Boston market.    That paradigm was echoed in the last of the
    intercepted calls:    the defendant, who was in Salt Lake City, told
    Suazo that he had rescheduled his flight because "the guy who was
    going to give me the thing is going to give it to me today."     He
    added that "I have the money on me to buy the thing and I even
    have the suitcases and all my things here, to buy it, send it and
    go straight to the airport."     In the course of that call, Suazo
    reminded the defendant of the lucrative prices for which the drugs
    could be resold in the Boston area.     Because prices were subject
    to fluctuation, there was some urgency to the deal:      in Suazo's
    words, "We have to put a couple pesos in our pocket, man, quickly."
    1 On the intercepted calls, Suazo and the defendant spoke in
    Spanish.     Translations were procured, and English-language
    transcripts were used at trial.
    - 3 -
    A few hours after this call ended, the defendant boarded
    a red-eye flight to Boston.       When he arrived early the next
    morning, he rented a car and drove to a house at 645 Fellsway West
    in Medford, Massachusetts.    He entered the house and — later that
    morning — a Federal Express package was delivered.      On the same
    day, the defendant drove to East Boston and picked up Suazo.   While
    the two men were driving, DEA agents stopped their vehicle.     The
    unopened Federal Express package was on the floor in the front
    seat.    The shipping label indicated that it had been shipped by
    "Droel Encarnacion" in Utah to "Elisida Figueroa" at the Fellsway
    West address.2   When opened, the package was found to contain 427.3
    grams (slightly less than a half kilo) of cocaine.    Suazo and the
    defendant were arrested on the spot.
    On November 7, 2018, a federal grand jury sitting in the
    District of Massachusetts returned an indictment that, as relevant
    here, charged the defendant with conspiracy to possess cocaine
    with intent to distribute, see 
    21 U.S.C. § 846
    , and possession of
    cocaine with like intent, see 
    id.
     § 841(a)(1).      During pretrial
    proceedings, the defendant moved to suppress the fruits of the
    wiretap.   The district court denied his motion and, in due season,
    a three-day jury trial ensued. The jury found the defendant guilty
    2 Subsequent investigation revealed that Elisida Figueroa is
    the defendant's mother.
    - 4 -
    on both of the charged counts, and the district court thereafter
    sentenced him.     This timely appeal followed.
    II
    On appeal, the defendant advances four claims of error.
    We deal with those claims sequentially.
    A
    The defendant argues that the wiretap should not have
    been authorized and that, therefore, the district court erred in
    denying   his   motion    to   suppress.    To   put     this    argument   in
    perspective, some background is useful.
    Through the enactment of Title III of the Omnibus Crime
    Control and Safe Streets Act of 1968 (Title III), 
    18 U.S.C. §§ 2510-2522
    , "Congress authorized wiretapping as needed to allow
    effective investigation of criminal activities while at the same
    time    ensuring   meaningful    judicial   supervision     and     requiring
    specific procedures to safeguard privacy rights."               United States
    v. Gordon, 
    871 F.3d 35
    , 43 (1st Cir. 2017).             To that end, Title
    III sets out specific showings that must be made to obtain judicial
    authorization for a wiretap.        See 
    18 U.S.C. § 2518
    (3).
    At the outset, the government must adduce facts showing
    probable cause to believe that a particular defendant is linked to
    a particular crime.       See 
    id.
     § 2518(3)(a).        It must then adduce
    facts   sufficient   to   support   "probable    cause    for    belief   that
    particular communications concerning that offense" are likely to
    - 5 -
    be obtained through the desired wiretap.       Id. § 2518(3)(b).      Next,
    the government must show that either the individual or the offense
    is sufficiently connected to the means of communication that it
    seeks to surveil.    See id. § 2518(3)(d).      Finally, the government
    must make a showing of necessity, that is, a showing that "normal
    investigative    procedures   have   been   tried    and   have   failed   or
    reasonably appear to be unlikely to succeed if tried or to be too
    dangerous."    Id. § 2518(3)(c).
    In this instance, the defendant premised his motion to
    suppress on two theories.       He alleged, first, that the wiretap
    application was insufficient because the facts supporting the
    initial probable-cause showing were stale and unreliable.           Second,
    he alleged that the wiretap application was insufficient because
    the government had not made an adequate showing of necessity.
    The district court found neither theory persuasive, and
    the defendant now reprises them on appeal.          Our standard of review
    is familiar.    When reviewing a district court's denial of a motion
    to suppress wiretap evidence, we assay its factual findings for
    clear error and its legal conclusions de novo.             Gordon, 871 F.3d
    at 43.   In conducting this tamisage, we must determine whether the
    application was at least "minimally adequate" to support the
    authorization of the wiretap.         Id. (quoting United States v.
    Santana, 
    342 F.3d 60
    , 65 (1st Cir. 2003)).
    - 6 -
    1
    We start with the defendant's challenge to the adequacy
    of   the   probable-cause    showing.     It   is   common   ground   that
    information in an affidavit supporting a wiretap application must
    be timely, not stale.       See, e.g., United States v. Schaefer, 
    87 F.3d 562
    , 568 (1st Cir. 1996).           Information is stale if, for
    example, "it established probable cause at some point in the past
    but does not support probable cause at the time of the warrant's
    issuance."    United States v. McLellan, 
    792 F.3d 200
    , 210 (1st Cir.
    2015).
    Just as different kinds of produce will retain their
    freshness for varying periods, the timeliness of probable cause is
    context-dependent and will vary         both   with the nature of the
    information itself and with the nature of the suspected offense.
    See United States v. Morales-Aldahondo, 
    524 F.3d 115
    , 119 (1st
    Cir. 2008).    Thus, "[w]hen evaluating a claim of staleness, we do
    not measure the timeliness of information simply by counting the
    number of days that have elapsed."       
    Id.
       "Instead, we must assess
    the nature of the information, the nature and characteristics of
    the suspected criminal activity, and the likely endurance of the
    information."    
    Id.
       Facts regarding an amorphous drug-trafficking
    enterprise, in which large-scale transactions may take weeks or
    months to mature, normally will have a longer shelf life.             See
    Schaefer, 
    87 F.3d at 568
     (observing that longer-running nature of
    - 7 -
    drug-trafficking conspiracies makes it more likely that "a datum
    from the seemingly distant past will be relevant to a current
    investigation"); United States v. Nocella, 
    849 F.2d 33
    , 40 (1st
    Cir. 1988) (noting that "drug trafficking, if unchecked, is apt to
    persist over relatively long periods of time" so that the shelf
    life of facts supporting probable cause may be longer). This shelf
    life sometimes may be extended when the application describes an
    ongoing pattern of conduct in the drug-trafficking arena, see
    Nocella, 
    849 F.2d at 40
    , because the probable cause determination
    will not hinge on discrete pieces of standalone evidence but,
    rather, on the totality of the circumstances, see United States v.
    Anzalone, 
    923 F.3d 1
    , 5 (1st Cir. 2019) (citing District of
    Columbia v. Wesby, 
    138 S. Ct. 577
    , 588 (2018)).
    In this case, the information supporting probable cause
    in the wiretap application included the following:
    •   Early in 2017, an alias ("Jevito") used by Suazo
    was mentioned on intercepted calls during a six-
    month wiretap of an international drug-trafficking
    organization   regarding   shipments   of   drugs   from
    Mexico to the United States; and a telephone number
    used by Suazo was identified as participating in
    multiple coded conversations about importing drugs
    from Mexico into the United States.
    - 8 -
    •   On August 8, 2016, a source of information (SOI-1)
    identified "Jevito" as a high-level cocaine dealer
    in Massachusetts.3          SOI-1 indicated that "Jevito"
    was his/her supplier for bulk cocaine and provided
    a telephone number that was later identified as
    having once belonged to Suazo.
    •   On     December    27,      2017,     a    second      source    of
    information       (SOI-2)    identified        "Jevito"    as    an
    individual living in Chelsea, Massachusetts, who
    had    once    supplied      him/her      with   200    grams    of
    fentanyl.      SOI-2 gave law enforcement a photograph
    of Suazo, identifying him as the man he/she knew as
    "Jevito" and confirmed that the target telephone
    number belonged to "Jevito."
    •   In March of 2018, another source of information
    (SOI-4) confirmed that "Jevito" lived in Chelsea,
    identified as "Jevito's" several telephone numbers
    used    by    Suazo,   and    (when       describing    "Jevito")
    accurately described Suazo's physical appearance.
    SOI-4 also      vouchsafed      that "Jevito" could move
    substantial         quantities            of     cocaine        and
    heroin/fentanyl in the Boston area.
    3Our numerical references to informants (e.g., "SOI-1") track
    those employed by the district court.
    - 9 -
    •   In April of 2018, SOI-4 introduced "Jevito" to
    another target of the investigation and brokered a
    sale of a kilogram of fentanyl between the two.
    "Jevito"   and     the    second     target   conducted   the
    transaction in Chelsea on May 1, 2018, and "Jevito"
    agreed to pay $50,000 for the drugs within the next
    fifteen    days.         Telephone    records     and   visual
    surveillance corroborated SOI-4's narrative of the
    transaction, and         agents    proceeded to    recover a
    kilogram of fentanyl.
    •   On July 17, 2018, another source of information
    (SOI-3) identified "Jevito" as a leader in a drug-
    trafficking organization based in Chelsea, which
    was selling ten to fifteen kilograms of cocaine,
    heroin, and fentanyl biweekly.           Although SOI-3 had
    not spoken to "Jevito" for roughly seven months,
    SOI-3 had known "Jevito" for most of his/her life
    and "Jevito" (he/she said) had been dealing drugs
    for approximately twenty years.
    •   In the same time frame, SOI-3 identified a Chelsea
    address associated with "Jevito," which cell phone
    data later confirmed was an address where Suazo had
    been.
    - 10 -
    •   Telephone records and pen register data reviewed by
    government agents prior to the wiretap application
    showed that the telephone number believed to be
    associated with Suazo had been used to contact
    several suspected drug dealers over a substantial
    period (up to July 20, 2018).
    To be sure, the bits and pieces of information garnered
    by the government do not comprise a seamless narrative.                Moreover,
    the defendant notes a number of small inconsistencies in the
    government's proffer.       But seamless narratives are not the stuff
    of wiretap applications, and to hold that these relatively small
    inconsistencies undermine the district court's probable cause
    determination would require us to overlook the forest for the
    trees.    Taken in the aggregate, the information contained in the
    wiretap   application     told    a   convincing   tale    of   ongoing   drug-
    trafficking activity with Suazo front and center.                The whole is
    sometimes greater than the sum of the parts and — viewed with an
    eye towards the ongoing conspiracy — the information was not stale.
    It   clearly   established       Suazo's   long-term      engagement    in   the
    wholesale drug trade in and around Boston — an engagement that
    persisted up until the weeks immediately preceding the wiretap
    application.       The facts adduced by the government were timely and
    more than "minimally adequate," Gordon, 871 F.3d at 43, to support
    probable cause for belief both that Suazo was continuing to engage
    - 11 -
    in the drug trade and that electronic monitoring would advance the
    investigation of his nefarious activities.
    2
    This brings us to the defendant's contention that the
    government failed to establish necessity for the wiretap.                            We
    approach   this    contention    mindful          that    "wiretapping     is   to   be
    distinctly the exception — not the rule."                         United States v.
    Hoffman, 
    832 F.2d 1299
    , 1307 (1st Cir. 1987).
    Title III's necessity requirement is designed to ensure
    that the government makes a good-faith effort to exhaust other,
    less intrusive investigative means before seeking to employ a
    wiretap.      See Gordon, 871 F.3d at 45.                The government, though,
    must not be held to an unrealistic standard:                     its explanation of
    investigative avenues taken and those left unexplored "must be
    viewed through the lens of what is pragmatic and achievable in the
    real world."      Id.; see United States v. Uribe, 
    890 F.2d 554
    , 556
    (1st   Cir.    1989)   (noting     need       for        "practical,      commonsense
    approach").     When all is said and done, an adequate showing of
    necessity "should demonstrate that the government has made a
    reasonable,     good   faith    effort       to    run     the    gamut   of    normal
    investigative procedures before resorting to means so intrusive as
    electronic interception of phone calls."                  Gordon, 871 F.3d at 46
    (quoting United States v. Martinez, 
    452 F.3d 1
    , 4 (1st Cir. 2006)).
    - 12 -
    To carry this burden, the government is "not required
    to show that other investigatory methods have been completely
    unsuccessful."     United States v. Rivera-Rosario, 
    300 F.3d 1
    , 19
    (1st Cir. 2002).    By the same token, the government need not either
    "run outlandish risks or [] exhaust every conceivable alternative
    before resorting to electronic surveillance."               Id.; see Santana,
    
    342 F.3d at 65
    .     Given these parameters, it is readily apparent
    that the necessity analysis demands a "context-specific" focus.
    Gordon, 871 F.3d at 46.
    This context-specific focus is especially apt where, as
    here, an investigation centers on a sprawling drug-trafficking
    network. We have noted before that "drug trafficking is inherently
    difficult to detect and presents formidable problems in pinning
    down the participants and defining their roles."                United States v.
    Santana-Dones, 
    920 F.3d 70
    , 76 (1st Cir. 2019) (quoting United
    States v. David, 
    940 F.2d 722
    , 728 (1st Cir. 1991)).                As a result,
    "investigative     personnel   must       be   accorded    some     latitude   in
    choosing their approaches."         
    Id.
    Moving     from   general        principles      to      the   specific
    circumstances of this case, the defendant first suggests that the
    government's     investigative       goals      were      overly     broad     and
    impermissibly    vague.4       At    first     blush,     the    goals   of    the
    4  The government's wiretap application stated that the
    overarching goal of the investigation was "establishing the full
    - 13 -
    investigation appear to be in step with investigative goals that
    we have approved in the past.        See, e.g., Santana-Dones, 920 F.3d
    at   78   (approving     goals   including   "discovering   the   sources,
    delivery means, storage locations, and distribution methods for
    the narcotics; locating resources used to finance the trafficking;
    and determining how the conspiracy invested and laundered their
    drug proceeds"); United States v. Villarman-Oviedo, 
    325 F.3d 1
    , 10
    (1st      Cir.   2003)    (approving     wiretap   authorization      when
    investigative goals involved "uncovering the full scope of the
    potential crimes under investigation, as well as the identities of
    those responsible for the unlawful manufacture, possession, sale
    and distribution of narcotics in Puerto Rico" and "obtaining
    evidence of the totality of offenses in which the targets of the
    investigation were involved").         The district court did not speak
    to this point, and we need not address it here:             in the court
    below, the defendant suggested that the goals of the investigation
    were too broad and too vague only in a footnote in his memorandum
    scope and nature of the criminal activities of [Suazo and the other
    targets] and others yet unknown and their criminal associates."
    The government then gave content and texture to this general goal
    by enumerating a series of more specific ones, including
    identifying suppliers; identifying redistributors and other
    downstream associates; identifying individuals who were assisting
    the targets in collecting and laundering drug proceeds;
    identifying locations used in furtherance of the targets' drug-
    trafficking activities; determining sources of illicit financing
    and the disposition of drug-trafficking proceeds; and illuminating
    drug-trafficking methods.
    - 14 -
    in    support   of       his    motion    to     suppress.        Given   this     glancing
    reference, unaccompanied by any developed argumentation, we deem
    this claim waived.             See Teamsters Union, Local No. 59 v. Superline
    Transp. Co., 
    953 F.2d 17
    , 21 (1st Cir. 1992) ("If any principle is
    settled in this circuit, it is that, absent the most extraordinary
    circumstances, legal theories not raised squarely in the lower
    court cannot be broached for the first time on appeal.").
    The defendant's next line of argument is that a wiretap
    was not necessary because, after the May 1 transaction, the
    government      "had      already        achieved    one     of    the    goals    of     the
    investigation        —    identifying       an    individual      supplying       drugs    to
    Suazo."    This argument takes too myopic a view of the necessity
    requirement.             Although    the       government     may    have    had    enough
    information to indict and convict Suazo and one of his suppliers
    after it learned of the May 1 transaction, the government had ample
    reason to believe that there were more foxes in the henhouse.                             The
    government is not required to abjure wiretapping and terminate an
    investigation once it has satisfied a limited subset of its
    investigative goals. See Santana-Dones, 920 F.3d at 77 (explaining
    that the necessity inquiry "does not hinge on whether it already
    has    garnered      enough      goods     to     pursue    criminal      prosecution").
    Indeed, the defendant concedes that there is "no obligation to
    arrest an individual as soon as probable cause to arrest ripens."
    - 15 -
    Here,   moreover,    the   government   explained    that    the
    supplier in the May 1 transaction, which had been brokered by SOI-
    4, was not one of Suazo's regular suppliers.            Consequently, the
    transaction shed little light either on Suazo's overall operations
    or on his working network of drug suppliers.            Arresting Suazo at
    that juncture would likely have driven his associates underground.
    So viewed, we think that the government sufficiently explained why
    its investigation should not have been concluded following the May
    1 transaction.
    Relatedly, the defendant argues that the government was
    required to try a laundry list of less intrusive investigative
    methods before seeking a wiretap.          As to each of these proposed
    methods,    the     government   offered     specific     and   reasonable
    explanations why that method (alone or in combination with others)
    would have been unproductive, too dangerous, or insufficient to
    achieve its investigative goals.5          What is more, the government
    made a cogent showing that less intrusive investigative techniques
    —   such   as   direct   surveillance   by   law    enforcement,   use    of
    5 An example may be helpful. The defendant complains that
    investigators "did not even attempt to use surveillance cameras"
    or execute search warrants. The government, however, plausibly
    explained — in its wiretap application — why surveillance cameras
    would have been of limited utility in gathering information about
    the operation of the conspiracy. So, too, it paused and explained
    that executing search warrants for locations associated with Suazo
    would have been "premature" and likely to alert other members of
    the conspiracy to the ongoing investigation.
    - 16 -
    confidential informants, interviews with cooperating defendants in
    other cases, and review of phone and text records retrieved from
    providers — had taken the investigation about as far as it could
    go.
    In sum, the wiretap application contained reasonable
    investigative goals, and the government plausibly explained why
    traditional means of investigation, including those it had already
    attempted, were insufficient to achieve the stated goals of the
    investigation.   On this record, the district court's finding that
    the government's showing of necessity was adequate easily passes
    muster.
    B
    The defendant's next claim of error implicates the jury-
    selection process.   He asserts that the district court abused its
    discretion in striking for cause a juror who stated during voir
    dire that she was a proponent of "defunding the police."       The
    government defends the district court's ruling and argues, in any
    event, that the defendant suffered no prejudice. See, e.g., United
    States v. Brooks, 
    175 F.3d 605
    , 606 (8th Cir. 1999) ("Even if the
    district court abused its discretion in striking [two prospective
    jurors] for cause, [the defendants] would not be entitled to a
    reversal of their convictions because they failed to show the
    jurors who tried their case were biased against them.").
    - 17 -
    We    review   a   district    court's   decision     to   strike   a
    potential juror for abuse of discretion. United States v. Sampson,
    
    486 F.3d 13
    , 39 (1st Cir. 2007).          Because the district court has
    the benefit of observing and interacting with potential jurors, we
    cede substantial deference to that court in assessing potential
    juror bias.      See United States v. Gonzalez-Soberal, 
    109 F.3d 64
    ,
    69 (1st Cir. 1997).       "There are few aspects of a jury trial where
    we would be less inclined to disturb a trial judge's exercise of
    discretion, absent clear abuse, than in ruling on challenges for
    cause in the empanelling of a jury."          United States v. McCarthy,
    
    961 F.2d 972
    , 976 (1st Cir. 1992).
    The very "purpose of a jury is to guard against the
    exercise of arbitrary power."       Taylor v. Louisiana, 
    419 U.S. 522
    ,
    530 (1975).      That purpose is best served when the jury reflects a
    representative      cross-section    of     the     community,    free    from
    preconceived viewpoints.       See 
    id.
        It follows that fairness is the
    sine qua non for jury service:            the jury must be "capable and
    willing to decide the case solely on the evidence before it."
    McDonough Power Equip., Inc. v. Greenwood, 
    464 U.S. 548
    , 554 (1984)
    (quoting Smith v. Phillips, 
    455 U.S. 209
    , 217 (1982)).                The voir
    dire process helps to control for this concern "by exposing
    possible biases, both known and unknown, on the part of potential
    jurors."   
    Id.
        "Demonstrated bias in the responses to questions on
    voir dire may result in a juror being excused for cause."                
    Id.
    - 18 -
    The   defendant   contends   that   the   district   court
    improperly struck a juror for cause due to the juror's political
    belief about "defunding the police."    In the defendant's view, the
    juror's comment reflected merely a principled skepticism about
    police testimony — not bias.    This contention, though, reads the
    record through rose-colored glasses.
    The critical voir dire exchange took place after the
    juror had expressed her sentiments about "defunding the police":
    THE COURT: I need to push you a little bit
    more on the answer, whether or not you have
    reservations about your ability to listen
    fairly to law enforcement testimony or you're
    confident you just can listen to it fairly and
    can make an independent evaluation based on
    that testimony.
    THE JUROR:      I guess I do have slight
    reservations. I can't say for sure. Sorry.
    Following this response, the court ruled that because the juror
    "had expressed a reservation about her ability to be fair," it
    would be necessary to excuse her for cause.
    When a juror cannot assure the court and the parties
    that she will be fair, that juror should not be allowed to serve.
    Here, the juror in question expressed doubt about her ability to
    be fair.    See, e.g., McDonough Power Equip., 
    464 U.S. at 554
    ;
    Sampson v. United States, 
    724 F.3d 150
    , 165 (1st Cir. 2013).       It
    was, therefore, comfortably within the encincture of the district
    court's discretion to strike the juror for cause.
    - 19 -
    Contrary to the defendant's importunings, the fact that
    the juror described her reservations as "slight" does not change
    the calculus in any material way.        Fairness is so central to the
    jury system that a juror's sincerely expressed doubts about her
    ability to be fair, even if slight, must be taken seriously.
    Except, perhaps, in the most extraordinary circumstances — not
    present here — doubts about fairness will always tilt in favor of
    disqualification.
    In an effort to blunt the force of this reasoning, the
    defendant suggests that the district court should have drilled
    down more deeply.       He also suggests that the court was more
    searching when questioning other members of the venire.        Even if
    such considerations are relevant to the question of whether the
    court abused its discretion in removing for cause a juror who had
    expressed reservations about her ability to be fair (a matter on
    which we take no view), they are of no help to the defendant in
    this case.    The court's questioning of the juror was sufficient to
    raise a legitimate fairness concern,6 and the record lends no
    6 The district court's explanation, given in connection with
    defense counsel's objection to the removal of the juror for cause,
    is informative:
    There are plenty of jurors that expressed
    various reservations about the legal system,
    their views about people that use drugs, their
    views about drug dealers. And any of those
    people, if they said they could be fair, they
    were kept on the jury irrespective of what
    those views were.      [This juror, though,]
    - 20 -
    credible support to the intimation that the district court applied
    some unique standard to the juror in question.        Our review of the
    jury-empanelment   transcript   confirms     that   the   court   treated
    prospective jurors even-handedly in all relevant respects.
    That ends this aspect of the matter.       There is simply no
    principled way — on this record — to hold that the district court
    abused its wide discretion in removing the juror for cause.7           We
    therefore reject the defendant's second claim of error.
    C
    The defendant's third claim is a claim of evidentiary
    error:   he submits that the district court abused its discretion
    in admitting expert testimony from a DEA group supervisor, Mark
    Tully.   Although Agent Tully had not himself participated in the
    investigation, the government introduced his testimony concerning
    the meaning of coded language used in recorded calls between Suazo
    and the defendant.
    Prior to trial, the defendant moved in limine to block
    Agent Tully from giving testimony.       The district court denied his
    motion, ruling that it would admit the testimony as long as the
    government laid a proper foundation.        At trial, that foundation
    expressed reservations about her ability to be
    fair.
    7 Because we find no error, we need not consider the
    government's back-up argument that the striking of the juror caused
    the defendant no prejudice.
    - 21 -
    was laid.       And when the government presented Agent Tully as an
    expert, the defendant's counsel stated that he had "no objection."
    In this venue, the defendant suggests that the district
    court    gave    unconditional            approval      to    Agent    Tully's   expert
    testimony and, thus, he did not need to object at trial.                          We do
    not agree.      Taken in context, we think that the district court's
    order was conditional thus requiring the defendant to raise any
    specific    objections      that         he    might   have   during    Agent    Tully's
    testimony.      Even so, the defendant did not object to Agent Tully's
    qualification as an expert during his testimony.
    Ordinarily,      a    defendant          must   object    to   particular
    evidence at trial in order to preserve his appellate rights.                          See,
    e.g., United States v. Noah, 
    130 F.3d 490
    , 496 (1st Cir. 1997).
    But when a defendant raises such an objection before trial by a
    motion   in     limine   and       the    district      court's   rejection      of   the
    defendant's position is unconditional, the defendant's objection
    may be deemed preserved even if not raised again at trial.                             See
    United States v. Grullon, 
    996 F.3d 21
    , 30 (1st Cir. 2021); United
    States v. Almeida, 
    748 F.3d 41
    , 50 (1st Cir. 2014).                      Here, however
    — as we have explained — the ruling was conditional, and no
    contemporaneous objection was interposed during                         Agent Tully's
    testimony.      It follows that the arguments made by the defendant on
    appeal with respect to Agent Tully's testimony engender only plain
    error review.       See Almeida, 748 F.3d at 50.                  "Review for plain
    - 22 -
    error entails four showings:         (1) that an error occurred (2) which
    was   clear    or   obvious   and    which    not    only   (3)   affected   the
    defendant's substantial rights, but also (4) seriously impaired
    the     fairness,    integrity,     or    public     reputation   of   judicial
    proceedings."       United States v. Duarte, 
    246 F.3d 56
    , 60 (1st Cir.
    2001).
    With this preface, we turn to the defendant's claim of
    error.    It rests on two grounds.          First, he says that Agent Tully
    should not have been allowed to testify as an expert because his
    methodology was unreliable.              Second, he says that Agent Tully
    should not have been allowed to testify as an expert because the
    communications that he purposed to interpret consisted of "plain,
    uncoded language" and, thus, expert testimony was unnecessary.
    Neither ground withstands scrutiny.
    As a starting point, we note that the defendant does not
    challenge Agent Tully's qualifications as an expert, his knowledge
    of the arcane world of drug distribution, or his wide experience
    in drug-trafficking investigations.                 Nor does he gainsay our
    repeated approval of the use of expert testimony, given by veterans
    of narcotics investigations, to explain the meaning of "coded"
    language in drug-related communications.             See, e.g., United States
    v. Henry, 
    848 F.3d 1
    , 12 (1st Cir. 2017); United States v.
    Santiago, 
    566 F.3d 65
    , 69 (1st Cir. 2009); Hoffman, 
    832 F.2d at 1310
    .     Such testimony is often helpful because in "a rough-and-
    - 23 -
    ready field" such as drug distribution, "experience is likely the
    best teacher."       Hoffman, 
    832 F.2d at 1310
     (approving expert
    qualification of veteran DEA officer on drug-trafficking codes and
    jargon).
    The defendant   nonetheless      argues that   Agent Tully's
    methodology was flawed.    That methodology was unreliable, he says,
    because it was "self-validating":        as he envisions it, Agent Tully
    reverse-engineered his testimony to fit the facts revealed at
    subsequent stages of the conspiracy.            Stripped of rhetorical
    flourishes, this argument is composed of little more than smoke
    and mirrors.   We explain briefly.
    When interpreting recorded conversations, Agent Tully
    frequently would be able to narrow coded language to a range of
    possible meanings.    He would then determine the precise meaning of
    the coded language based, in part, on what drugs had later been
    seized.    That was not reverse-engineering but, rather, a common
    sense way of isolating the precise meaning of a coded term.
    Agent   Tully   gave    the     district   court   a   helpful
    illustration of how his methodology worked.           He referred to an
    earlier investigation in which suspected co-conspirators discussed
    "palomas" and "palomitas," each consisting of "four white doves."
    Only after the contraband (four-ounce packages of cocaine) had
    been seized could the precise meaning of "paloma" and "white dove"
    be ascertained.
    - 24 -
    The case at hand, Agent Tully indicated, was analogous.
    Kilos of "white stuff," mentioned in the recorded calls, might
    refer either to cocaine or fentanyl (both drugs in which Suazo
    allegedly trafficked).      Without further information — such as was
    provided by an actual seizure — Agent Tully could not pinpoint
    which drug was being discussed.         When cocaine was seized, the
    meaning became evident.
    Viewed against this backdrop, the defendant's objection
    crumples.    Context often informs interpretive judgments, and there
    is nothing problematic about an expert's methodology aligning with
    common sense.     Mindful of the wide variety of matters on which
    expert testimony may be useful, Federal Rule of Evidence 702
    demands that the inquiry into an expert's methodology must be
    tailored to fit the circumstances of each particular case.              See
    Daubert v. Merrell Dow Pharms., Inc., 
    509 U.S. 579
    , 594 (1993)
    ("The inquiry envisioned by Rule 702 is, we emphasize, a flexible
    one.").     Especially outside of scientific fields, factors bearing
    on the reliability of an expert's methodology will vary. See Kumho
    Tire Co. v. Carmichael, 
    526 U.S. 137
    , 150 (1999) (noting that
    because there are "many different kinds of experts, and many
    different    kinds   of   expertise,"   the   factors   relevant   to   the
    reliability inquiry will vary).         The methodology used by Agent
    Tully was not beyond the pale.     In point of fact, that methodology
    - 25 -
    is strikingly similar to methodologies that we have deemed reliable
    in other cases.         See, e.g., Henry, 848 F.3d at 12.
    In a variation on this theme, the defendant argues that
    the subject matter of Agent Tully's testimony was such that it did
    not allow for any expert testimony at all.                    As was true of his
    "methodology" argument, this dog will not hunt.
    We agree, of course, that a party should not be allowed
    to confer the imprimatur of expertise upon interpretations of
    evidence that jurors need no assistance in understanding.                            See
    United   States      v.   Valdivia,   
    680 F.3d 33
    ,   51    (1st     Cir.   2012)
    (explaining that when "expert testimony on a subject is 'well
    within the bounds of a jury's ordinary experience,' the risk of
    unfair prejudice outweighing probative value is not improbable"
    (quoting United States v. Montas, 
    41 F.3d 775
    , 784 (1st Cir.
    1994))).     In this case, though, it was neither clear nor obvious
    error for the district court to conclude that the decisional scales
    tipped in favor of allowing expert testimony.
    To begin, it was neither clear nor obvious error for the
    district court to find that expert testimony would be helpful to
    the   jury   in   understanding       the    jargon    used      by   Suazo    and   his
    confederates. For instance, when Suazo and the defendant discussed
    "blue    ones"    and     "yellow   ones,"    the     Agent's     expert      testimony
    rendered those terms intelligible as, respectively, 30-milligram
    Percocet     pills      and   10-milligram    Percocet      pills.       His      expert
    - 26 -
    knowledge as to the color and strength of pills peddled by drug
    dealers in the New England market was helpful to the jury in
    understanding the recorded conversations.
    We think, as well, that Agent Tully's expertise was
    helpful to the jury in explaining the nature of the transactions
    to which the coded terms related.           See Henry, 848 F.3d at 12
    (upholding    officer's   expert    testimony   not     directly    related
    "obscure    jargon"   admissible    because   officer    "drew     upon   his
    expertise in explaining the relevance of the communications in the
    drug trade"); United States v. Monell, 
    801 F.3d 34
    , 45 (1st Cir.
    2015)   (permitting    expert   testimony     related    to   drug-dealer
    methods).    For example, Agent Tully was able to assist the jury in
    understanding the economics behind an intercepted discussion of
    the relative advantages of "pure" cocaine versus "cut" cocaine.
    Because a pure product can be cut without degrading its potency
    below marketable quality, more profit can be reaped from increasing
    marketable volume through the use of adulterants.          In contrast, a
    "cut" product yields profit mainly through price arbitrage between
    locations — "getting it here and selling it."            And, relatedly,
    Agent Tully was able to explain how discussions of price tied into
    these distinctions.
    Last — but surely not least — the district court took
    appropriate steps to guard against any unfair prejudice.            For one
    thing, it gave considerable latitude to the defendant in cross-
    - 27 -
    examining Agent Tully about alternate meanings of various terms.
    For another thing, it was careful to instruct the jury to weigh
    the evidence independently.8          These safeguards were sufficient —
    in the circumstances at hand — to mitigate any risk of unfair
    prejudice.     See Henry, 848 F.3d at 12; Rosado-Pérez, 605 F.3d at
    56.
    Nothing more need be said about Agent Tully's testimony.
    We conclude that there was no plain error in the district court's
    challenged rulings concerning this testimony.              Accordingly, we
    reject the defendant's third claim of error.
    D
    This leaves the defendant's claim that the district
    court erred in permitting the government to introduce evidence of
    four intercepted calls between Suazo and the defendant.              In those
    calls, the two men discussed, among other things, potential drug
    transactions     apart   from   the    one   that   led   directly    to   the
    defendant's arrest.
    8Pertinently, the district court instructed the jury that it
    was free to "accept or reject [the expert's] testimony in whole or
    in part." The court also instructed the jury that "[i]n weighing
    the testimony, [it] should consider the factors that generally
    bear upon the credibility of a witness as well as the expert
    witness's education and experience, the soundness of the reasons
    given for the opinion and all other evidence in the case."
    Finally, the court directed that the jury alone should "decide how
    much of the expert witness's testimony to believe, and how much
    weight it should be given."
    - 28 -
    The question is one of timing.           The indictment charged
    a compressed conspiracy beginning on September 17, 2018 and ending
    on September 18 of the same year.                The four challenged calls
    occurred on earlier dates (August 12, August 20, August 29,
    September 11).       During pretrial proceedings, the defendant moved
    in limine to exclude evidence of these calls, contending that
    because they took place before the opening date of the charged
    conspiracy and some involved different drugs, they were "prior bad
    acts" evidence, likely to confuse the jury and                     cause unfair
    prejudice.     See Fed. R. Evid. 404(b); see also Fed. R. Evid. 403.
    The   district    court   denied    the    defendant's     motion,
    holding that the four challenged calls did not reflect "separate
    acts, but rather acts intrinsic to the charged conspiracy" and,
    thus, were admissible without regard to Rule 404(b).                     In the
    court's view, the conversations — which dealt with the "planning
    other similar narcotics transactions" — furnished "evidence of how
    the [d]efendant and his co-conspirator entered into an overarching
    conspiracy" and were admissible to "show the course of dealings
    between   co-conspirators."           The   district     court   held,   in   the
    alternative, that even if the four calls were considered "prior
    bad   acts"    evidence      within   the   ambit   of    Rule   404(b),      they
    nonetheless     could   be     admissible   to   "explain    the    background,
    formation, and development of the illegal relationship." (quoting
    United States v. Green, 
    698 F.3d 48
    , 55 (1st Cir. 2012)).                     The
    - 29 -
    court added that the probative value of the evidence was not
    substantially      outweighed     by     any   cognizable    danger     of    unfair
    prejudice.
    The defendant renewed this objection at trial, but the
    district court held firm.              The evidence was admitted, and the
    defendant presses his claim of error on appeal.                 Our review is for
    abuse of discretion.          See United States v. Simon, 
    12 F.4th 1
    , 40-
    42 (1st Cir. 2021) (Rule 403); United States v. Robles-Alvarez,
    
    874 F.3d 46
    , 50 (1st Cir. 2017) (Rule 404(b)).
    Under      Rule   404(b),     evidence     of   other     acts   is   not
    admissible to prove a defendant's character or propensity, but
    such evidence may be admitted if it has "special relevance."
    Henry, 848 F.3d at 8.          Evidence may have special relevance if it
    is   offered      to    show,     say,     "motive,     opportunity,         intent,
    preparation, plan, knowledge, identity, absence of mistake, or
    lack of accident."        Fed. R. Evid. 404(b)(2).            Even if specially
    relevant, though, such evidence is inadmissible if its probative
    value is substantially outweighed by its unfairly prejudicial
    effect.    See Fed. R. Evid. 403.         And when evidence is intrinsic to
    elements    of    a    charged   offense,       Rule   404(b)    is    simply     not
    implicated.      See, e.g., Robles-Alvarez, 874 F.3d at 50; Villarman-
    Oviedo, 
    325 F.3d at 11
    .
    Here, the district court, in effect, used a belt and
    suspenders.      The court prudently made alternative holdings.                    It
    - 30 -
    held that the challenged calls were intrinsic to the conspiracy
    and that — even if they were not — they were admissible under Rule
    404(b).     The defendant contests both rationales.
    To begin, the defendant contends that the calls were not
    intrinsic    to   the   charged    conspiracy    because   they    transpired
    several weeks before the conspiracy's opening date.                 Moreover,
    certain of the calls focused on drugs and transactions other than
    the ones involved in the charged conspiracy.           This contention is
    not without some bite, and we think it arguable that some of the
    calls were not intrinsic to the charged conspiracy.               But we need
    not decide this question:           rather, we assume, albeit without
    deciding, that the four earlier calls were not intrinsic to the
    charged conspiracy and that, therefore, Rule 404(b) applies.
    Even on this defendant-friendly assumption, it was not
    an abuse of discretion to admit the four recorded conversations
    into evidence.     In our judgment, the district court did not abuse
    its discretion in determining that all the calls had special
    relevance because they were harbingers of what was to come:              they
    were probative of the development of the charged conspiracy and of
    the nature of the working relationship between Suazo and the
    defendant.    See United States v. Green, 
    698 F.3d 48
    , 55 (1st Cir.
    2012) (holding that "in a conspiracy case, 'evidence of other bad
    acts . . . can be admitted to explain the background, formation,
    and   development       of   the   illegal      relationship,     and,   more
    - 31 -
    specifically, to help the jury understand the basis for the co-
    conspirators'     relationship    of   mutual     trust'"   (alteration   in
    original) (quoting United States v. Escobar-de Jesús, 
    187 F.3d 148
    , 169 (1st Cir. 1999))).
    The defendant demurs, insisting that even if the calls
    had special relevance, their admission created an intolerable risk
    of unfair prejudice.        Admitting them, he muses, likely lured the
    jury into convicting him based on general speculation that he was
    a drug dealer.
    The district court rejected this plaint, and so do we.
    Particularly in light of the revelatory nature of the calls and
    the   other    compelling   evidence   of   the   defendant's   guilt,    the
    district court did not abuse its discretion in determining that
    the probative value of the calls was not substantially outweighed
    by any unfairly prejudicial effect.          See Green, 698 F.3d at 56;
    Escobar-de Jesús, 
    187 F.3d at 169-70
    ; see also Fed. R. Evid. 403.
    We have made it luminously clear that "[o]nly rarely — and in
    extraordinarily compelling circumstances — will we, from the vista
    of a cold appellate record, reverse a district court's on-the-spot
    judgment concerning the relative weighing of probative value and
    unfair effect."      United States v. Mehanna, 
    735 F.3d 32
    , 59 (1st
    Cir. 2013) (quoting Freeman v. Package Mach. Co., 
    865 F.2d 1331
    ,
    1340 (1st Cir. 1988)).       This is a far cry from that rare case.
    - 32 -
    III
    We need go no further. For the reasons elucidated above,
    the judgment of the district court is
    Affirmed.
    - 33 -