United States v. Gordon , 871 F.3d 35 ( 2017 )


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  •           United States Court of Appeals
    For the First Circuit
    No. 15-2087
    UNITED STATES OF AMERICA,
    Appellee,
    v.
    DIMITRY GORDON,
    Defendant, Appellant.
    APPEAL FROM THE UNITED STATES DISTRICT COURT
    FOR THE DISTRICT OF MAINE
    [Hon. Jon D. Levy, U.S. District Judge]
    Before
    Torruella, Selya and Kayatta,
    Circuit Judges.
    Edward S. MacColl, with whom Thompson, MacColl & Bass, LLC,
    P.A. was on brief, for appellant.
    Renée M. Bunker, Assistant United States Attorney, with whom
    Richard W. Murphy, Acting United States Attorney, and Margaret D.
    McGaughey, Assistant United States Attorney, Appellate Chief, were
    on brief, for appellee.
    September 8, 2017
    SELYA,   Circuit   Judge.        Defendant-appellant      Dimitry
    Gordon strives to persuade us that the district court erred in
    denying his motion to suppress wiretap evidence and/or in refusing
    to hold one or more evidentiary hearings in connection therewith.
    We are not convinced and, therefore, we affirm the challenged
    orders (that is, the order denying the motion to suppress and the
    orders denying the two requests for evidentiary hearings).
    I.   BACKGROUND
    Around September of 2012, a joint task force spearheaded
    by   the    federal   Drug    Enforcement     Administration    (DEA),    and
    including     state   and    local   law     enforcement   officers,     began
    investigating     a   drug-distribution      ring   centered   in   Lewiston,
    Maine.     This probe led investigators to identify Romelly Dastinot
    and Jacques Victor as the likely leaders of the ring.1 The task
    force came to believe that the two regularly pooled their resources
    to buy drugs in bulk quantities in Boston and transport them to
    Maine.      Once the drugs arrived in Maine, the pair apparently
    peddled them through separate distribution channels.
    In the course of its investigation, the task force
    obtained Dastinot's and Victor's telephone records.            That trove of
    1This appeal was consolidated for oral argument with an
    appeal taken by Dastinot, which raised a narrower subset of the
    issues advanced by the appellant. Dastinot's appeal, No. 16-1272,
    will be resolved by means of a separate opinion.
    - 2 -
    information yielded several text-message exchanges detailing drug
    transactions.
    In addition, the task force implemented a gallimaufry of
    other investigative strategies.        To cite one example, it executed
    controlled buys from both Dastinot and Victor.                 Some of the
    controlled buys implicated the appellant as a lower-level member
    of the conspiracy, who sold drugs (either oxycodone pills or crack
    cocaine) on Dastinot's behalf.        To cite another example, the task
    force partnered with confidential sources and turncoat members of
    the drug ring.2
    Despite its investigative efforts, the task force was
    unable to learn either the identity or specific location of the
    drug ring's suppliers.     Nor was the task force able to get a handle
    on the drug ring's organizational structure.          In hopes of catching
    bigger   fish,    the   government    submitted   a   series    of   wiretap
    applications to the district court between February and May of
    2014, seeking to monitor a total of five telephones.            Only three
    of the target telephones, known as TT1, TT2, and TT5, are relevant
    to this appeal (Dastinot used TT1 and TT5, while Victor used TT2).
    2 The record reflects that the task force's investigation
    involved no fewer than four confidential sources and that some
    seven members of the drug ring cooperated with the government at
    various stages of the investigation. For ease in exposition, we
    do not distinguish between the confidential sources and the
    turncoats but, rather, refer to all of them as cooperating sources.
    - 3 -
    The appellant was identified as a target-subject of the wiretaps
    even though his own telephone was never tapped.
    A DEA agent, Joey Brown, prepared supporting affidavits
    for the wiretap applications.            All of these applications were
    approved by the district court and renewed as needed.                    See 
    18 U.S.C. § 2518
    (5) (limiting wiretap authorization to thirty days).
    In Agent Brown's first affidavit (dated February 24, 2014), he
    spelled out investigative techniques that the task force had used
    up   to   that    point.      For    instance,    investigators    had   worked
    extensively       with     cooperating    sources,     executed     controlled
    purchases,       analyzed    telephone     data    (obtained      through   pen
    registers,       telephone    toll    records,     historical     text-message
    records,     and     trap-and-trace       devices),    conducted      physical
    surveillance, examined public records, and used available subpoena
    powers (both administrative and grand jury).
    The affidavit identified the objectives of the wiretap
    investigation as obtaining:
    a. The identity of the sources of supply           for
    Dastinot and Victor, their locations, and          the
    manner   in   which   they    acquire[d]           and
    transport[ed] drugs to Maine and elsewhere         for
    distribution;
    b. The precise roles of the Target Subjects
    [including the appellant] in this drug
    conspiracy and the methods being utilized by
    the Target Subjects to distribute illegal
    drugs;
    - 4 -
    c.   The identity of all persons receiving
    drugs from Dastinot and Victor for further
    distribution;
    d.    Identification of the site(s) being
    utilized for the storage and concealment of
    illegal drugs;
    e. The existence, location and disposition of
    proceeds (including currency, real estate,
    motor vehicles, and personal property) derived
    from the Target Subjects' involvement in drug
    distribution;
    f.     The precise date(s), time(s) and
    location(s) of shipments of illegal drugs
    to/from this organization and the manner of
    delivery.
    The affidavit revealed that the task force had learned very little
    about the drug ring's sources of supply, finances, organizational
    structure, or the roles of its members.
    According to Brown, the task force had mulled a number
    of additional investigative strategies, but had rejected them as
    either too risky or too unlikely to yield worthwhile results.    In
    this vein, the task force had decided against conducting more
    aggressive physical surveillance, attempting to install cameras in
    selected public locations, obtaining search warrants for known
    drug-distribution   venues,   collecting   target-subjects'   trash,
    widening the use of grand jury interviews, or attempting to
    introduce undercover agents into the ring.      Brown added that he
    did not believe that further controlled purchases would yield more
    information about the drug ring.       Nor did he think that either
    - 5 -
    approaching or arresting the target-subjects and asking them to
    reveal their sources of supply was apt to prove fruitful.
    Brown also noted that the task force had considered
    obtaining cell-site location information for at least some of the
    telephones.    This option was rejected because "the range of error
    in this type of data prevents narrowing down a precise residence
    (especially in dense places like Boston and Lewiston)."        What is
    more, the location data are often several minutes behind the actual
    location of the telephone.     And location data alone, he reasoned,
    whether from cell-site records or from vehicle trackers, would not
    reveal the identity of the person with whom a target-subject meets
    or the nature of the encounter.
    Brown concluded that wiretapping was "the only available
    technique that ha[d] a reasonable likelihood of securing the
    evidence      necessary   to   accomplish   the   goals   of     th[e]
    investigation."    His affidavit chronicled minimization procedures
    that would be instituted if the wiretaps were approved.        At the
    outset, the monitors (the persons intercepting calls) would be
    provided with a minimization memorandum, the wiretap applications,
    and the authorizing orders.      In pertinent part, the memorandum
    instructed that monitors should stop listening to conversations
    that did not relate to the criminal enterprise (though they could
    periodically check on seemingly innocuous discussions to see if
    - 6 -
    the conversation had shifted).             Each monitor would sign a form
    indicating that he had read the documents.
    After the district court granted the first of the wiretap
    applications, the task force set up a wire room to serve as a
    central location for intercepting and monitoring calls.                 The room
    was staffed from 8:00 a.m. to midnight, and any calls not monitored
    by staff in real time were not recorded.            Through the duration of
    the wiretaps, the authorities intercepted approximately 23,000
    completed calls and text messages, many of which were in Haitian
    Creole (the language of choice for members of the drug ring).
    Along the way, the government compiled and submitted periodic
    statistical summaries to the district court.
    Armed with, inter alia, the fruits of the wiretapping,
    a federal grand jury sitting in the District of Maine indicted the
    appellant and eleven codefendants.               The indictment charged the
    appellant with conspiracy to distribute and possess with intent to
    distribute controlled substances, see 
    21 U.S.C. §§ 841
    (a)(1), 846,
    and   conspiracy    to    commit     money   laundering,    see    
    18 U.S.C. § 1956
    (a)(1)(B)(i).
    In due course, the appellant moved to suppress the
    evidence obtained through the wiretaps and requested two kinds of
    evidentiary hearings.       First, he requested a general evidentiary
    hearing   as   to   the   adequacy    of   the    government's    minimization
    procedures.    Second, he requested a Franks hearing on the ground
    - 7 -
    that Brown's affidavits in support of the wiretap applications
    included false statements.         See Franks v. Delaware, 
    438 U.S. 154
    ,
    155-56 (1978).
    The district court heard arguments on these motions on
    January 28, 2015, but reserved decision.                  It later ordered the
    government     to     submit    additional        information        regarding     the
    statistical makeup of the intercepted conversations.                   In response,
    the government submitted Brown's supplemental affidavit dated
    February 13, 2015, which clarified and corrected the double-
    counting of some intercepted calls and reported that 14% of the
    calls lasting more than two minutes had been minimized in some
    way.
    After further briefing, the district court denied not
    only   the   motion    to    suppress     but    also   the   twin    requests     for
    evidentiary     hearings.         The     appellant     thereafter       entered     a
    conditional guilty plea to the drug conspiracy count, see Fed. R.
    Crim. P. 11(a)(2), preserving his right to appeal the denial of
    both   his   motion     to     suppress    and    his    related      requests     for
    evidentiary hearings.        The district court accepted the conditional
    plea and subsequently sentenced the appellant to a 28-month term
    of immurement.        At the same time, the court dismissed the money
    laundering charge.       This timely appeal followed.
    - 8 -
    II.    THE MOTION TO SUPPRESS
    Insisting    that        his    motion    to    suppress   the    wiretap
    evidence    should      have        been     granted,      the    appellant,     ably
    represented, attacks the wiretap orders on multiple fronts.                       We
    start with his assertion that the orders were insufficiently
    particular.    We next proceed to his claims that wiretapping was
    unnecessary   and    that,      in    all     events,      the   government    failed
    adequately to minimize its intrusion into the target-subjects'
    privacy rights.
    Familiar standards of review guide our analysis.                     When
    assaying a district court's ruling on a motion to suppress wiretap
    evidence, we review its factual findings for clear error and its
    legal conclusions de novo.            See United States v. Lyons, 
    740 F.3d 702
    , 720-21 (1st Cir. 2014).                 The key question is whether the
    wiretap application and its supporting affidavits were "minimally
    adequate" to support the issuance of the wiretap order.                        United
    States v. Santana, 
    342 F.3d 60
    , 65 (1st Cir. 2003) (quoting United
    States v. Villarman-Oviedo, 
    325 F.3d 1
    , 9 (1st Cir. 2003)).
    A.    Particularity.
    With the passage of Title III of the Omnibus Crime
    Control and Safe Streets Act of 1968 (Title III), see 
    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
    - 9 -
    specific procedures to safeguard privacy rights. See United States
    v. Rodrigues, 
    850 F.3d 1
    , 6 (1st Cir. 2017); see also Gelbard v.
    United States, 
    408 U.S. 41
    , 48 (1972) (describing Title III as
    "(1) protecting the privacy of wire and oral communications, and
    (2) delineating on a uniform basis the circumstances and conditions
    under which the interception of wire and oral communications may
    be   authorized"    (quoting     S.   Rep.   No.   1097,   at   66   (1968),   as
    reprinted in 1968 U.S.C.C.A.N. 2112, 2153)).               Among other things,
    Title III provides for the suppression of wiretap evidence on the
    ground that "the order of authorization or approval under which it
    was intercepted [was] insufficient on its face."                      
    18 U.S.C. § 2518
    (10)(a)(ii).
    Here, the appellant complains that the wiretap orders
    failed to satisfy Title III's particularity requirements in three
    respects.    He submits that they did not include "a particular
    description of the type of communication sought to be intercepted,"
    
    id.
     § 2518(4)(c); that they did not include "a statement of the
    particular offense to which [the communication] relates," id.; and
    that they did not include a sufficient description of "the agency
    authorized to intercept the communications," id. § 2518(4)(d).                 We
    examine these plaints sequentially.
    The    appellant's    remonstrance      regarding    the   type    of
    communication sought focuses on the fact that the orders were not
    limited to existing telephone numbers but, rather, extended to
    - 10 -
    numbers "subsequently assigned to or used by the instruments
    bearing the same" electronic serial number (ESN) or International
    Mobile Equipment Identity (IMEI) number as the original tapped
    telephone.        For   example,    if    Dastinot    changed       the    ten-digit
    telephone number assigned to a particular cellular telephone, the
    order would automatically cover the new ten-digit number, and the
    task force would not have to seek a further order every time that
    number changed.     Relatedly, the orders authorized the interception
    of "background conversations intercepted in the vicinity of the
    target   telephones       while   the    telephones     are   off    the    hook    or
    otherwise    in   use."      In    the    appellant's    view,      extending      the
    authorizations in this manner rendered them impermissibly broad.
    These arguments comprise more cry than wool.                    Brown's
    affidavits set forth convincing reasons for tracking telephones by
    ESN or IMEI number: drug traffickers change telephone numbers
    frequently in an attempt to avoid detection and, in the bargain,
    tend not to associate their names with telephone numbers. To cinch
    the matter, the orders were specific in that they restricted
    interception to particular serial numbers.                We can think of no
    good reason why Title III's particularity requirement should be
    read as limiting a wiretap to a specific telephone number rather
    than a specific ESN or IMEI number reasonably believed to be used
    by the target.      Cf. United States v. Oliva, 
    705 F.3d 390
    , 400-01
    (9th Cir. 2012) (holding, with respect to 
    18 U.S.C. § 2581
    (4)(b),
    - 11 -
    that order authorizing wiretap by reference to specific serial
    number was sufficiently descriptive to satisfy Title III's mandate
    that order describe "the nature and location of the communications
    facilities").
    The    appellant's        argument      regarding      background
    conversations        overheard    through    an   off-the-hook     telephone    is
    equally unavailing.         This language is standard fare in wiretap
    applications, see 
    id.
     at 397 n.7, and its inclusion does not make
    the wiretap orders impermissibly broad.                 After all, describing
    potential types of communications to be intercepted appears fully
    consistent with Title III's directive to define the sought-after
    communications with particularity.               And, finally, it is doubtful
    whether Title III even applies to background conversations.                    Cf.
    United States v. Couser, 
    732 F.2d 1207
    , 1210 (4th Cir. 1984)
    (questioning whether "plain view" doctrine creates an exception to
    Title    III    requirements      for    background    conversations).         See
    generally United States v. Williams, 
    827 F.3d 1134
    , 1153 (D.C.
    Cir.    2016)    (assuming,      arguendo,   that     overheard    conversations
    implicate Title III's requirement to name target individuals but
    noting lack of authority for the proposition), cert. denied, 
    137 S. Ct. 706
     (2017).
    Next, the appellant posits that the wiretap orders are
    invalid for failing to identify "the particular offense to which"
    the sought-after communications relate.               
    18 U.S.C. § 2518
    (4)(c).
    - 12 -
    The critical fault, he says, is that the orders simply cite
    statutory sections without providing any broader context.        But the
    appellant sets the bar too high: the enumeration of specific
    criminal statutes itself serves to identify particular offenses
    and, thus, satisfies this facet of the particularity requirement.
    See United States v. Spillone, 
    879 F.2d 514
    , 517-18 (9th Cir.
    1989).
    The overall structure of the statute buttresses this
    view: an earlier subsection — section 2518(3)(a) — uses the term
    "particular   offense"   in   reference   to   "a   particular   offense
    enumerated in section 2516." Section 2516, in turn, lists criminal
    offenses, some by statutory citation and others by even broader
    descriptions, such as "the manufacture, importation, receiving,
    concealment, buying, selling, or otherwise dealing in narcotic
    drugs, marihuana, or other dangerous drugs, punishable under any
    law of the United States."     
    18 U.S.C. § 2516
    (1)(e).     In light of
    this provision, abecedarian principles of statutory construction
    lead to the conclusion that the "particular offense" requirement
    in section 2518(4)(c) is satisfied when a wiretap order simply
    lists the charging statute.      See United States v. Nippon Paper
    Indus. Co., 
    109 F.3d 1
    , 4-5 (1st Cir. 1997) ("It is a fundamental
    interpretive principle that identical words or terms used in
    different parts of the same act are intended to have the same
    meaning.   This principle . . . operates not only when particular
    - 13 -
    phrases appear in different sections of the same act, but also
    when they appear in different paragraphs or sentences of a single
    section." (citations omitted)).
    The appellant has one last shot in his particularity
    sling.    Title III requires a wiretap order to specify "the agency
    authorized     to     intercept    the   communications."           
    18 U.S.C. § 2518
    (4)(d).         The appellant assails the description of the
    authorized agency contained in the wiretap orders as virtually
    "unbounded."
    By their terms, the orders authorize "special agents of
    the   United   States    Drug     Enforcement      Administration   and    other
    investigative and law enforcement officers, and civilian monitors
    operating under a contract with the Government" to conduct the
    wiretapping.    The appellant correctly notes the looseness of this
    language: phrases such as "other investigative and law enforcement
    officers" are not moored to any particular agency.                Even so, the
    orders must be read in the context of Brown's affidavits and the
    wiretap applications, and those documents leave little doubt that
    the DEA was the agency involved.
    For one thing, Brown's affidavits made pellucid the
    DEA's pervasive involvement in the case.              For another thing, the
    wiretap orders specified that the wiretapping would "be executed
    at    a   listening    post   maintained      at   the   United   States    Drug
    Enforcement Administration Resident Office, in Portland, Maine."
    - 14 -
    They also described a cooperative effort between Verizon Wireless
    and the DEA.   Given a practical, commonsense reading, we hold that
    the wiretap orders were sufficiently particular in describing the
    DEA as "the agency authorized" to conduct the wiretapping.
    Even if we assume, for argument's sake, that inclusion
    of the loose language challenged by the appellant departed from
    the statutory "agency identification" requirement, the violation
    would not demand suppression.     Not every blemish in an order of
    authorization demands suppression: such a remedy is required only
    when there is a failure to satisfy "statutory requirements that
    directly and substantially implement the congressional intention
    to limit" wiretaps.    United States v. Giordano, 
    416 U.S. 505
    , 527
    (1974); see United States v. Cunningham, 
    113 F.3d 289
    , 293-94 (1st
    Cir. 1997).    This principle recognizes that suppression is "strong
    medicine," which should not be profligately dispensed.       United
    States v. Adams, 
    740 F.3d 40
    , 43 (1st Cir. 2014).
    The putative violation of the "agency identification"
    requirement is more a matter of form than of substance.        That
    lapse, though regrettable, cannot plausibly be said to directly or
    substantially weaken the protections that Congress sought to craft
    in connection with wiretapping.     See United States v. López, 
    300 F.3d 46
    , 55-56 (1st Cir. 2002) (holding that "government must
    disclose, as a part of its application for a wiretap warrant, any
    intention to utilize the services of civilian monitors in the
    - 15 -
    execution of the warrant" but concluding that omission did not
    require      suppression).         It   follows   that    suppression       would   be
    manifestly disproportionate to the putative violation and, thus,
    should not be required.
    That ends this aspect of the matter.                    We reject the
    appellant's importunings and hold that the wiretap orders were not
    so lacking in particularity as to demand suppression.
    B.   Necessity.
    In investigating criminal activity, "wiretapping is to
    be distinctly the exception — not the rule."                     United States v.
    Hoffman, 
    832 F.2d 1299
    , 1307 (1st Cir. 1987).                  To balance "privacy
    and    the    rights   of    the    individual,"       Title    III    requires     the
    government to establish necessity as a prerequisite for obtaining
    a wiretap order.       
    Id.
        Seizing on this requirement, the appellant
    asserts that the government failed to establish that it was
    necessary to resort to wiretapping.
    In the Title III lexicon, necessity is not an absolute.
    Rather, it must be viewed through the lens of what is pragmatic
    and achievable in the real world.            See United States v. Uribe, 
    890 F.2d 554
    , 556 (1st Cir. 1989) (explaining that "Title III demands
    a practical, commonsense approach to exploration of investigatory
    avenues").      It is a relative term — and it is context-specific.
    To demonstrate necessity, a wiretap application must include "a
    full    and    complete      statement     as     to   whether        or   not   other
    - 16 -
    investigative procedures have been tried and failed or why they
    reasonably appear to be unlikely to succeed if tried or to be too
    dangerous."     
    18 U.S.C. § 2518
    (1)(c).       Such a showing
    "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."            United States v. Martinez, 
    452 F.3d 1
    , 4 (1st Cir. 2006) (quoting Villarman-Oviedo, 
    325 F.3d at 9
    ).
    This does not mean, though, that the government is
    "required to show that other investigatory methods have been
    completely unsuccessful."              United States v. Rivera-Rosario, 
    300 F.3d 1
    , 19 (1st Cir. 2002).            Nor does it mean that "the government
    [is] forced to run outlandish risks or to exhaust every conceivable
    alternative before resorting to electronic surveillance."                         Id.;
    accord Santana, 
    342 F.3d at 65
    .
    On appeal, our task is not to undertake a de novo
    determination of necessity as if we were deciding whether to issue
    the wiretap order.          See United States v. Ashley, 
    876 F.2d 1069
    ,
    1074 (1st Cir. 1989); accord Rodrigues, 850 F.3d at 9.                      We need
    only "decide if the facts set forth in the application were
    minimally adequate to support the determination that was made."
    Ashley, 
    876 F.2d at 1074
     (quoting United States v. Scibelli, 
    549 F.2d 222
    ,    226   (1st    Cir.      1977)).     In    evaluating     whether   the
    government has crossed this threshold, we have not hesitated to
    - 17 -
    uphold wiretap orders based on an agent's plausible, good faith
    "assert[ion of] a well-founded belief that the techniques already
    employed during the course of the investigation had failed to
    establish the identity of conspirators, sources of drug supply, or
    the   location   of   drug   proceeds."    Rodrigues,   850   F.3d   at   10
    (collecting cases).     As we explain below, that is exactly the type
    of assertion that the government proffered here.
    Brown's affidavits related that it was not until early
    2014 — approximately a year and a half into the investigation —
    that the government turned to wiretaps.        At that point, the task
    force already had employed a myriad of investigative techniques,
    including the use of confidential sources, physical surveillance,
    controlled buys, analysis of telephone data and public records,
    and the issuance of subpoenas (both administrative subpoenas and
    grand jury subpoenas).       Extensive use of these tools had left the
    agents in the dark about important matters such as the drug ring's
    sources of supply, its organizational structure, and its finances.
    By the same token, Brown spelled out plausible reasons for not
    employing certain other strategies.        The task force did not want
    to attempt more intensive use of undercover agents or cooperating
    sources for fear of arousing suspicion.3 For much the same reasons,
    3The maxim "once bitten, twice shy" was in play: Brown was
    concerned that at least one confidential source already had been
    outed because the source had been sold fake (or extremely low-
    quality) heroin in executing a controlled buy.
    - 18 -
    the task force did not recommend either more aggressive physical
    surveillance or trying to install cameras.                  Further surveillance
    of public spaces would be ineffectual, Brown reasoned, because the
    vast majority of this drug ring's crimes occurred indoors.
    To   be   sure,     the    task   force      had      considered    simply
    revealing    its      evidence,       at   least      in    part,       to    selected
    coconspirators and attempting to elicit their cooperation.                       This
    tactic was not pursued because the task force reasonably concluded
    that the possibilities of success were slim and the risks of
    failure were great.
    Other     methods     considered       but     left    by   the    wayside
    included cell-site location data and vehicle tracking.                          Brown
    plausibly explained that the "range of error" of the cell-site
    data provided by Verizon Wireless prevented that data from being
    very useful, "especially in dense places like Boston and Lewiston."
    At any rate, the data would not be able to "narrow[] down a precise
    residence" in such areas.             With respect to multi-unit buildings
    (common in Boston and Lewiston), targeting a particular building
    through location data would not serve to identify individual
    conspirators.       More critically, neither the cell-site data nor
    vehicle tracking could reveal the purpose for the conspirator's
    movements, the identity of the persons with whom they were meeting,
    or the purposes of those meetings.                    To obtain this kind of
    intelligence, Brown believed that wiretapping was needed.
    - 19 -
    The short of it is that Brown's affidavits, read as a
    whole, show that the task force carried out a long-lasting, wide-
    ranging, good-faith investigation that ran the gamut of standard
    investigative techniques.           Those affidavits reflect a careful and
    rational balancing of the utility of various investigatory tools
    against the possibility of prematurely alerting the drug ring to
    the probe. The foundation laid in Brown's affidavits substantiates
    a plausible judgment that the investigation had reached a point at
    which   wiretapping      was    reasonably        necessary.      We   conclude,
    therefore, that the wiretap applications were more than minimally
    adequate to justify the wiretap orders.                   It follows that the
    appellant's necessity challenge fails.
    C.    Minimization.
    Title III warns monitors to minimize irrelevant calls.
    See 
    18 U.S.C. § 2518
    (5) (declaring that monitoring must "be
    conducted   in   such    a   way    as    to   minimize   the   interception   of
    communications not otherwise subject to interception"); see also
    Scott v. United States, 
    436 U.S. 128
    , 140 (1978) (explaining that
    Title III "instructs the agents to conduct the surveillance in
    such a manner as to 'minimize' the interception of [irrelevant]
    conversations").        Consistent with this admonition, the wiretap
    orders directed the monitors to stop listening and/or recording
    when it became apparent that a conversation was not related to the
    criminal investigation.         The minimization memorandum distributed
    - 20 -
    to the monitors contained a similar warning. Even so, the monitors
    were permitted to check periodically on any given conversation to
    ascertain whether the discussion had shifted.                    The appellant
    insists   that       the   government     failed   to     comply   with    these
    requirements.
    Blanket suppression of wiretap evidence is a "drastic"
    remedy, which should be reserved for the most "egregious" cases.
    Hoffman, 
    832 F.2d at 1309
    .        A minimization violation often can be
    cured through a less draconian remedy: suppression of only those
    calls that the court determines should have been minimized.                 See
    
    id.
       Here, however, the appellant has not identified even a single
    call that he contends should have been minimized, but was not.4
    Thus, the relevant question reduces to whether the government's
    handling of its minimization responsibilities was so egregious as
    to support a blanket exclusion of the evidence obtained through
    wiretapping.
    As    a    general   matter,    whether      the   government   fails
    adequately to minimize intercepted conversations "depend[s] on the
    facts and circumstances of each case."             Scott, 
    436 U.S. at 140
    .
    In evaluating the facts and circumstances of a specific case and
    4Indeed, the appellant has not identified even a single
    failure to minimize that prejudiced his rights. The absence of
    any such prejudice may, in itself, warrant the denial of his motion
    to suppress.    See López, 
    300 F.3d at 58
     (upholding denial of
    suppression where defendant was not prejudiced by two intercepted
    non-pertinent calls).
    - 21 -
    the government's fealty to Title III's minimization requirements,
    a reviewing court must "look at several factors, including: 1) the
    nature and complexity of the suspected crimes; 2) the thoroughness
    of the government's precautions to bring about minimization; and
    3)    the   degree     of     judicial    supervision         over   the    surveillance
    process."       López, 
    300 F.3d at 57
    .
    In this instance, the first two factors weigh heavily in
    the government's favor.              The sprawling operations of the drug ring
    and the complexity of the suspected crimes are manifest.                         In cases
    like    this    one,       involving     drug    conspiracies        of     indeterminate
    proportions, "the need to allow latitude to eavesdroppers is close
    to its zenith."            Hoffman, 
    832 F.2d at 1308
    .
    To    add     to   the    complexity,     the     appellant       and   his
    confederates frequently spoke in Haitian Creole and employed code
    names on many occasions. The use of "codes and specialized jargon"
    furnish an added reason for affording monitors leeway because, in
    such    cases,       more    context     is     needed   to    determine       whether   a
    conversation is related to the suspected crimes.                       Uribe, 
    890 F.2d at 557
    .     The use of a foreign language itself supplies an extra
    layer of complexity.              Cf. United States v. David, 
    940 F.2d 722
    ,
    730    (1st         Cir.     1991)      (explaining      that        when     intercepted
    communications are in a foreign language and a real-time translator
    is not available, minimization may be accomplished as soon as
    practicable after the fact).
    - 22 -
    Importantly, the scope of the conspiracy was unknown at
    the time that the wiretaps were authorized.                 Indeed, an animating
    purpose behind the wiretap applications was to flesh out the
    structure of the organization and to identify the drug ring's
    sources of supply.          These uncertainties also counsel in favor of
    granting wider latitude to the monitors.                 See, e.g., Hoffman, 
    832 F.2d at 1308
     (allowing broad latitude when "investigation is
    focused largely on blueprinting the shape of the conspiratorial
    wheel and identifying the spokes radiating from its hub").
    Here, moreover, the thoroughness of the government's
    precautions to bring about minimization is unquestioned.                              The
    record      reflects   that    the   government       established       a    regime    of
    adequate      precautions      designed      to   ensure    that    monitors         were
    appropriately minimizing irrelevant conversations.                      All monitors
    had    to    confirm   in     writing      that   they    had   read    the     wiretap
    applications and supporting affidavits, the wiretap orders, and an
    instructional memorandum detailing proper minimization procedures.
    These documents were posted in the monitors' workplace for easy
    reference.      Prosecutors also met with government agents to brief
    them on minimization standards.
    The third factor is not quite as clear-cut; in the end,
    though, we think that the record indicates sufficient judicial
    supervision.      See Uribe, 
    890 F.2d at 558
    .                To begin, the court
    took    care,    in    crafting      the    wiretap      orders,   to       detail    the
    - 23 -
    minimization   procedures    already    discussed.    In   addition,   the
    government was required to submit statistical reports to the court
    on an ongoing basis.
    It is the contents of these statistical reports that
    bring us to the crux of the appellant's minimization argument.
    When the appellant questioned the accuracy of some of the proffered
    numbers in arguing for suppression in the court below — contending,
    for example, that the reports listed as minimized calls that were
    not monitored and text messages that were not minimized — the
    district   court   ordered   the    government   to   submit   additional
    explanations and more detailed data.
    Before us, the appellant focuses on the percentage of
    non-pertinent calls that were not minimized in any way (98%,
    according to his calculations).        Such percentages, though, tell us
    very little because many calls presumably end before the listener
    can determine their pertinence.        Courts therefore tend to look at
    the relative percentage of calls minimized out of those calls
    lasting more than two minutes.       See, e.g., United States v. De La
    Cruz Suarez, 
    601 F.3d 1202
    , 1215 (11th Cir. 2010); United States
    v. Yarbrough, 
    527 F.3d 1092
    , 1098 (10th Cir. 2008); United States
    v. Rivera, 
    527 F.3d 891
    , 905 (9th Cir. 2008); United States v.
    Dumes, 
    313 F.3d 372
    , 380 (7th Cir. 2002).        Here, the government's
    data show that there were 1616 such calls, out of which 667 were
    determined to be not pertinent; 229 calls were minimized, likely
    - 24 -
    meaning that over two-thirds of non-pertinent calls in excess of
    two minutes were not minimized.           Although the fact that over 200
    calls were minimized shows that there were real minimization
    efforts undertaken, the percentage of non-pertinent calls not
    minimized would seem to warrant some explanation.
    The record points to such an explanation — at least
    enough of an explanation for us to find that the district court's
    ruling was not unreasonable and, thus, to justify upholding it.
    As Brown noted, many calls were in Haitian Creole and/or coded
    parlance,   requiring      either   the   use   of   translators   or   other
    assistants.      It   is    eminently      reasonable   to   conclude    that
    determining the lack of pertinence of such calls would take much
    longer than usual.
    Tellingly, there is no evidence of a slew of examples of
    calls that plainly should have been minimized in less than two
    minutes, but were not.        Through we do not suggest that defense
    counsel need have reviewed hundreds of calls, we make the more
    limited point that if the minimization process had not been an
    "honest effort," United States v. Charles, 
    213 F.3d 10
    , 22 (1st
    Cir. 2000), it should have been easy to find quite a few examples
    of non-minimized calls that obviously should have been minimized.
    Nor is there any other sign of either a less-than-serious effort
    on the part of the government to comply or a less-than-serious
    degree of supervision by the district court such as would lead us
    - 25 -
    to conclude that the court abused its considerable discretion.
    Consequently, we decline the appellant's invitation to hold that
    the failure to minimize more irrelevant calls caused a "taint upon
    the investigation as a whole."        Hoffman, 
    832 F.2d at 1307
    .
    Although we uphold the district court's ruling that
    suppression was not required due to minimization deficiencies, we
    note that the appellant was at a disadvantage in manipulating the
    wiretap data.     The government produced the logs for more than
    20,000 telephone calls and text messages in the form of 10,000-
    plus pages in portable document format (PDF).             Converting the
    10,000 pages of PDFs into a workable spreadsheet would require
    inordinate    time,   effort,   and   resources.    The   government   had
    available to it, and most likely should have produced the data in,
    a   more   serviceable   format.5      The   appellant,   though,   merely
    mentioned the government's failure to provide the material in an
    electronically sortable format in his motion to suppress; he did
    not identify this failure either as a ground for his motion or as
    5The record discloses that the government was able to run
    reports, sort, and otherwise manipulate the data using a program
    called VoiceBox. When queried at oral argument in this court, the
    government offered no explanation as to why it could not have
    produced for the appellant a spreadsheet embodying the same
    functionality as it enjoyed by means of the VoiceBox program. But
    cf. United States v. Briggs, No. 10-CR-184S, 
    2012 WL 5866574
    , at
    *2 (W.D.N.Y. Nov. 16, 2012) (discussing limitations of VoiceBox
    and finding disclosure obligations satisfied with searchable PDFs
    rather than Excel-style spreadsheets because of data corruption
    concerns).
    - 26 -
    a basis for a continuance.    Nor did he raise any issue concerning
    the government's failure to produce materials in an electronically
    sortable format in his briefs on appeal.     Consequently, we do not
    pursue this point.     See United States v. Iwuala, 
    789 F.3d 1
    , 7
    (1st Cir. 2015) (explaining that arguments not made in opening
    appellate brief are deemed waived), cert. denied, 
    136 S. Ct. 913
    (2016); United States v. Slade, 
    980 F.2d 27
    , 31 (1st Cir. 1992)
    (explaining that arguments not made in the district court are
    deemed waived).
    III.   THE EVIDENTIARY HEARING REQUESTS
    We end our journey by examining the appellant's twin
    requests for evidentiary hearings — his request for a general
    evidentiary hearing on his failure-to-minimize argument, and a
    Franks hearing to appraise what he alleges to be false statements
    in   Brown's   affidavits.    We   discuss   these   hearing    requests
    separately.
    A.   General Evidentiary Hearing.
    No criminal defendant has "a presumptive right to [a
    general] evidentiary hearing on a motion to suppress."            United
    States v. D'Andrea, 
    648 F.3d 1
    , 5 (1st Cir. 2011).             Rather, a
    general evidentiary hearing is only warranted if the party seeking
    suppression "makes a sufficient threshold showing that material
    facts are in doubt or dispute, and that such facts cannot reliably
    be resolved on a paper record."      
    Id.
     (quoting United States v.
    - 27 -
    Staula, 
    80 F.3d 596
    , 603 (1st Cir. 1996)).           When all is said and
    done, "the defendant must show that there are factual disputes
    which, if resolved in his favor, would entitle him to the requested
    relief."      Staula, 
    80 F.3d at 603
    .         "The district court has
    considerable discretion in determining the need for, and the
    utility of, evidentiary hearings, and we will reverse the court's
    denial of an evidentiary hearing in respect to a motion in a
    criminal case only for manifest abuse of that discretion."              
    Id.
    In the case at hand, the appellant alleges that he
    presented a colorable, fact-intensive claim as to whether the
    government    appropriately     minimized   his    communications.          That
    claim, he says, could only be resolved after an evidentiary
    hearing.    We do not agree.
    The district court was adequately apprised of the facts
    relating     to   minimization     through    the     parties'       filings,
    particularly      after   the    government       furnished     supplemental
    information (at the court's direction) explaining its minimization
    tallies    more   thoroughly.     The   Supreme     Court     has   noted    the
    "necessarily ad hoc nature" of minimization determinations and has
    emphasized the need for flexibility in judicial oversight.             Scott,
    
    436 U.S. at 139
    .     In the end, whether the government has engaged
    in adequate minimization is quintessentially a judgment call, and
    the court below had sufficient facts before it to make an informed
    decision in that regard. We conclude, therefore, that the district
    - 28 -
    court did not abuse its wide discretion in declining to hold a
    general evidentiary hearing to delve further into the minimization
    issue.
    B.    Franks Hearing.
    This     leaves   the    appellant's       request     for   a   Franks
    hearing.     To obtain a Franks hearing, a defendant must make "a
    substantial preliminary showing that a false statement knowingly
    and intentionally, or with reckless disregard for the truth, was
    included by the affiant in the warrant affidavit, and [that] the
    allegedly false statement is necessary to the finding of probable
    cause."     
    438 U.S. at 155-56
    .        "In considering a district court's
    decision to deny a Franks hearing, we review factual determinations
    for clear error and the probable cause determination de novo."
    United States v. Arias, 
    848 F.3d 504
    , 511 (1st Cir. 2017); see
    United States v. Tanguay, 
    787 F.3d 44
    , 48-50 (1st Cir. 2015)
    (reviewing de novo district court's probable cause analysis in
    connection with Franks hearing).
    Here, the appellant alleges that Brown's affidavits
    contained    false    statements      with   respect    to   the    existence   of
    probable cause vis-à-vis money laundering, the efficacy of cell-
    site location data, and the likelihood that wiretapping would allow
    the task force to identify assets of the conspiracy and the precise
    roles of the individuals involved.
    - 29 -
    The statements to which the appellant adverts, though,
    are as much matters of opinion as matters of fact, and the
    appellant has made no convincing showing that Brown knew the
    statements    were   false,   yet    nonetheless    included    them   in    his
    affidavits.
    We add, moreover, that all of the challenged statements
    appear to have had a reasonable basis in fact.              With respect to
    the   money-laundering     statements,     Brown    did   not   need   to   have
    probable cause to believe that the appellant himself was engaging
    in money laundering.        He only needed probable cause to believe
    that some members of the conspiracy were so engaged.               The record
    adequately evinces that Brown had probable cause to believe that
    some members of the drug ring were engaging in money laundering;
    after all, Brown's affidavits presented a detailed showing of
    repeated   buying    and   selling    of   drugs,   which   gave   rise     to   a
    commonsense inference that the members of the drug ring must have
    been participating in some kind of scheme to protect and launder
    their profits.
    As to the cell-site location data, the appellant did not
    proffer enough facts to demonstrate that Brown's statements were
    false, much less knowingly so.        While the appellant's brief relies
    heavily on a document submitted to the district court (a Verizon
    Wireless publication for law enforcement officers), the district
    court took this document into account, see United States v.
    - 30 -
    Dastinot, No. 2:14-CR-69, 
    2015 WL 1292611
    , at *6 (D. Me. Mar. 23,
    2015), concluding (reasonably, we think) that it did not contradict
    Brown's   statements      that   the        location       data    were   neither
    sufficiently accurate nor sufficiently particularized to enable
    agents to pinpoint a specific residence, especially in densely
    populated areas.
    We need not linger long over the appellant's allegations
    that   Brown   either   dissembled     or    made   statements       in   reckless
    disregard of the truth when he stated that the task force hoped to
    learn through the wiretaps about the precise roles of conspirators
    and the whereabouts of the drug ring's assets.                    In support, the
    appellant suggests that these goals were too broad to be reasonably
    achievable.    This contention does not withstand scrutiny.
    The    goals    of    identifying           a    drug     conspiracy's
    organizational structure (at least in rough terms) and locating
    its assets are achievable in some measurable sense.                   Intercepted
    conversations might well give clear indications of the drug ring's
    hierarchy, and investigators — following up on information gleaned
    from intercepts — might well locate cash, inventory, real estate
    holdings, or other items of value.            To say that these statements
    of aspirational goals were either intentionally false or made in
    reckless disregard of the truth is simply a bridge too far.                    We
    have approved similarly broad goals in other wiretap cases, see,
    e.g., Martinez, 
    452 F.3d at 6
    ; Villarman-Oviedo, 
    325 F.3d at 10
    ,
    - 31 -
    and Brown could not be faulted for the description of goals
    contained in his affidavits.
    To say more would be to paint the lily. We hold, without
    serious question, that the district court did not commit reversible
    error in refusing to convene either a general evidentiary hearing
    or a Franks hearing.
    IV.   CONCLUSION
    We need go no further. For the reasons elucidated above,
    the orders of the district court are
    Affirmed.
    - 32 -