United States v. Monson ( 2023 )


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  •           United States Court of Appeals
    For the First Circuit
    No. 21-1612
    UNITED STATES OF AMERICA,
    Appellee,
    v.
    JONATHAN MONSON,
    Defendant, Appellant.
    APPEAL FROM THE UNITED STATES DISTRICT COURT
    FOR THE DISTRICT OF MASSACHUSETTS
    [Hon. Mark G. Mastroianni, U.S. District Judge]
    Before
    Barron, Chief Judge,
    Lipez and Howard, Circuit Judges.
    Jin-Ho King, with whom Milligan Rona Duran & King, LLC., was
    on brief, for appellant.
    Mark T. Quinlivan, Assistant United States Attorney, with
    whom Rachael S. Rollins, United States Attorney, was on brief, for
    appellee.
    June 26, 2023
    - 1 -
    HOWARD, Circuit Judge.      A jury convicted Jonathan Monson
    on fifteen counts of an indictment charging sexual exploitation of
    children         and   distribution,    receipt,     and   possession     of   child
    pornography.           He was sentenced to 480 months' incarceration.              On
    appeal,      Monson      challenges    the   admission     of   certain   evidence
    against him at his trial, the sufficiency of the evidence against
    him,       and   his    sentence.      Concluding    that   each    challenge     is
    unavailing, we affirm.
    I. BACKGROUND1
    In 2017, while participating in an undercover capacity
    in a Kik Messenger ("Kik")2 group named "Taboo Train 2.0," an FBI
    agent observed not only that the group's discussion focused on
    child pornography but also that one of the group's members was
    distributing child pornography to the group.                    That user, whose
    screen name consisted of four emoticons followed by the name "john
    (daddauluv_r6n@talk.kik.com),"                transmitted          five        images
    constituting child pornography to the group.3                    Suspicious that
    In assessing the sufficiency claim, we recount the facts in
    1
    the light most favorable to the verdict. United States v. Burgos-
    Montes, 
    786 F.3d 92
    , 98 (1st Cir. 2015). For the suppression of
    evidence claim, we offer a balanced account. Id.; United States v.
    Piper, 
    298 F.3d 47
    , 50 (1st Cir. 2002).
    Kik is a cloud-based social media application that permits
    2
    users to anonymously share text and multi-media messages with one
    another, both one-on-one and in group chats.
    3   Those five images formed the bases for Counts 5-9.
    - 2 -
    Monson was the user distributing the child pornography, agents
    obtained search warrants for Monson, his residence in Granby,
    Massachusetts, and his vehicles.
    In March 2018, FBI agents and local law enforcement
    officers, armed and dressed in tactical gear, went to Monson's
    home to execute the search warrant.        During the execution of the
    warrant, FBI Special Agent Ian Smythe expressed his desire to speak
    with Monson, told Monson "that they perhaps would be better off
    finding a place with less activity" to speak, and informed Monson
    that he was neither in custody nor under arrest.       Monson agreed to
    accompany the agents to the Granby Public Safety Complex, a
    community building which housed both the Granby police station and
    fire station, and to speak with Smythe there.       At the public safety
    complex, Smythe and Special Agent Michael Sheehan led Monson to a
    public conference room that was in the building's lobby -- not in
    the section of the building designated as the police station --
    where they then interviewed him.         Smythe advised Monson of his
    Miranda rights and Monson signed a form acknowledging that he
    understood those rights and was willing to answer questions without
    a lawyer present.
    During    the   interrogation,   Monson   made   a   number   of
    admissions including: that he had an eleven-year-old daughter;
    that he had installed Kik onto his iPhone and had used Kik to find
    groups associated with incest fantasy and child pornography; that
    - 3 -
    the Kik account with the username consisting of four emoticons and
    "john     (daddauluv_r6n@talk.kik.com)"            belonged   to    him;     that
    "daddauluv" referred to "daddy-daughter love"; that he became
    active in the group "Taboo Train 2.0" over a year earlier using an
    iPhone 6 -- which he had since traded in for an iPhone 7 Plus --
    and that he had posted images to that group; that he would
    frequently engage in "tickle fights" with his daughter and that he
    may have touched her groin area; and that he had, on one occasion,
    taken his iPhone into the bathroom while his daughter was showering
    and "accidentally" took pictures which might still be on his
    iPhone.
    Following that interrogation, the agents seized Monson's
    iPhone 7 Plus.        Monson then underwent a polygraph examination and
    a subsequent interview with a different agent, during which Monson
    made additional incriminating admissions.               At the conclusion of
    the second interview the agents arrested Monson.               Examination of
    Monson's iPhone 7 Plus revealed evidence of the sexual exploitation
    of children as well as child pornography.
    In    a   superseding   indictment       the   government     brought
    fifteen criminal counts against Monson: the first four counts
    alleged Sexual Exploitation of Children (
    18 U.S.C. § 2251
    (a));
    counts     five   through    twelve      alleged     Distribution    of    Child
    Pornography (18 U.S.C.         § 2252A(a)(2)(A)); counts thirteen and
    fourteen     alleged     Receipt    of   Child      Pornography     (18    U.S.C.
    - 4 -
    § 2252A(a)(2)(A)); and count fifteen alleged Possession of Child
    Pornography (18 U.S.C. § 2252A(a)(5)(B)).
    In advance of trial, Monson sought to suppress the
    statements that he had made during his initial interview at the
    Public Safety Complex on the basis that those statements were made
    during a custodial interrogation and that he had not waived his
    Fifth Amendment rights before making the incriminating statements.4
    Finding   that   Monson   was    not     in    custody    at    the    time    of   the
    interrogation, the district court denied the suppression motion.
    Trial spanning five days was had before a jury, and at the close
    of the evidence, Monson moved unsuccessfully for a judgment of
    acquittal,   see   Fed.   R.     Crim.    P.     29(a),    on    the    four    child
    exploitation counts on sufficiency grounds.
    The jury subsequently found Monson guilty on all fifteen
    counts, and the district court sentenced Monson to 480 months'
    incarceration.
    II. DISCUSSION
    On appeal, Monson           brings    three distinct challenges.
    First, he argues that the district court erred in denying his Rule
    4 At the hearing on Monson's motion to suppress, Monson's
    counsel clarified that the motion concerned only the admission of
    statements made during the initial interrogation by Smythe (and
    not any statements made during his polygraph examination or the
    second interrogation -- conducted by a different FBI agent -- which
    followed that examination).
    - 5 -
    29(a) motion because the evidence at trial was insufficient to
    satisfy   the    jurisdictional   element    of   the   child   exploitation
    counts.   Second, Monson argues that the court erred in denying his
    suppression motion because he was interrogated while he was in
    custody but had not waived his Miranda rights.                  Finally, he
    challenges the procedural reasonableness of his sentence on the
    ground    that   the   district   court     incorrectly    determined   his
    Guidelines sentencing range.      We address each argument in turn.
    A. THE SUFFICIENCY OF THE EVIDENCE
    We begin with the challenge to the sufficiency of the
    evidence on counts one through four because his success on that
    score would render moot the other claims of trial and sentencing
    error on those counts.     United States v. Ramírez-Rivera, 
    800 F.3d 1
    , 16 (1st Cir. 2015), abrogation on other grounds recognized by
    United States v. Leoner-Aguirre, 
    939 F.3d 310
     (1st Cir. 2019).
    i.
    Preserved challenges to the sufficiency of the evidence
    are reviewed de novo, see United States v. Ocean, 
    904 F.3d 25
    , 28
    (1st Cir. 2018), and we will sustain the jury's verdict if the
    record evidence -- "evaluated in the light most favorable to the
    verdict . . . [and] including all plausible inferences drawn
    therefrom" -- would permit a rational factfinder to find the
    defendant guilty beyond a reasonable doubt.               United States v.
    Torres Monje, 
    989 F.3d 25
    , 27 (1st Cir. 2021) (internal quotation
    - 6 -
    marks omitted) (quoting United States v. Santos-Rivera, 
    726 F.3d 17
    , 23 (1st Cir. 2013)).
    ii.
    
    18 U.S.C. § 2251
    (a) provides that "[a]ny person who
    employs, uses, persuades, induces, entices, or coerces any minor
    to engage in . . . any sexually explicit conduct for the purpose
    of producing any visual depiction of such conduct . . . shall be
    punished . . . if that visual depiction was produced or transmitted
    using materials that have been mailed, shipped, or transported in
    or affecting interstate or foreign commerce by any means, including
    by computer."    As used in § 2251(a), Congress defined "producing"
    to   include    "producing,     directing,     manufacturing,     issuing,
    publishing, or advertising." 
    18 U.S.C. § 2256
    (3). As have several
    other   circuits,   we   have   held   that   § 2251(a)   is   thus   to   be
    understood to criminalize both the initial recording or creation
    of child exploitation materials as well as the subsequent creation
    of copies or subsequent reproduction of those materials.                   See
    United States v. Poulin, 
    631 F.3d 17
    , 23 (1st Cir. 2011) ("Congress
    intended a broad ban on the production of child pornography and
    aimed to prohibit the varied means by which an individual might
    actively create it.        As such, the government did not need to
    establish at what point 'production' occurred, nor produce in
    evidence   a   recording   device."    (internal   citations    omitted));
    United States v. Burdulis, 
    753 F.3d 255
    , 262 (1st Cir. 2014) ("When
    - 7 -
    a person loads an image onto a thumb drive from the internet or
    another source, that person has created a new copy of the image in
    the digital memory of the thumb drive.          As the Ninth Circuit put
    it, '[w]hen the file containing the image is copied onto a disk,
    the original is left intact and a new copy of the image is created,
    so the process "produces" an image.'" (alteration in original)
    (quoting United States v. Guagliardo, 
    278 F.3d 868
    , 871 (9th Cir.
    2002) (per curiam))); United States v. Lacy, 
    119 F.3d 742
    , 750
    (9th Cir. 1997); United States v. Dickson, 
    632 F.3d 186
    , 189-90
    (5th Cir. 2011); United States v. Caley, 
    355 Fed. Appx. 760
    , 761
    (4th Cir. 2009); United States v. Maxwell, 
    386 F.3d 1042
    , 1052
    (11th Cir. 2004), vacated but later reinstated in relevant part,
    see 
    446 F.3d 1210
    , 1211 (11th Cir. 2006); United States v. Angle,
    
    234 F.3d 326
    , 341 (7th Cir. 2000).
    iii.
    In contending that the evidence was insufficient to
    satisfy   the   jurisdictional   element   of   the   child   exploitation
    counts, Monson takes two tacks.     He first argues that the evidence
    did not establish that the image which formed the basis of count
    one was produced using materials that had travelled in interstate
    commerce, because that image was created with Monson's iPhone 6;
    neither that iPhone 6, nor any information regarding it, were
    admitted into evidence at trial; and the image was created before
    Monson's iPhone 7 Plus (which was part of the evidence) was
    - 8 -
    manufactured.     Monson contends that this gap precludes any finding
    that the child exploitation occurred with the purpose of creating
    the reproduction of the image that was found on that iPhone 7 Plus.
    He   separately    argues    that   the   evidence   was   insufficient   to
    establish that his iPhone 7 Plus, which contained the four images
    underlying   the    child    exploitation     counts,   had   travelled   in
    interstate commerce.        Finding both arguments unavailing, for the
    reasons discussed below, we affirm the district court's denial of
    Monson's Rule 29 motion for acquittal.
    The iPhone 6 Argument (Count One)
    Monson's challenge to the sufficiency of the evidence
    underlying his conviction on count one focuses on the phrase "that
    visual depiction" in connection with the interstate or foreign
    commerce requirement in § 2251(a).           The use of the word "that,"
    Monson argues, links the conduct element (the use of a minor for
    the purpose of producing any sexually explicit visual depiction)
    with the commerce requirement such that the same visual depiction
    (that is, the same image file) constitute both the prohibited
    conduct and the commerce nexus.           In making this argument, Monson
    relies on the Sixth Circuit's reasoning in United States v. Lively,
    
    852 F.3d 549
    , 558 (6th Cir. 2017), that
    The word "that" links the two parts of
    § 2251(a). As used here, "that" is an
    adjective. In the second part of § 2251(a),
    "that" modifies and restricts the noun "visual
    depiction," which is also used in the first
    - 9 -
    part of the statute. The most natural reading
    of § 2251(a) is clear: "that" clarifies that
    the "visual depiction" in the first half of
    § 2251(a) is the same "visual depiction" the
    second jurisdictional hook addresses. Thus,
    to violate § 2251(a), a defendant must
    sexually exploit a minor for the purpose of
    producing   a   visual  depiction   of   this
    exploitation, and that same visual depiction
    must be produced using materials that have an
    interstate-commerce nexus.
    A jury could not find that Monson violated § 2251(a)
    with respect to the image underlying count one, he argues, because
    his use of a minor and his initial creation of a visual depiction
    of that use occurred before the iPhone 7 Plus on which the image
    was discovered had even been manufactured.    Accordingly, a jury
    could not find that he had "the purpose to produce" the visual
    depiction that was located on the iPhone 7 Plus at the time that
    he used the minor to create the initial visual depiction on his
    iPhone 6, preventing the requisite link between the conduct element
    and interstate commerce requirement.   We reject this argument.
    Even if we were to accept and apply Monson's narrowing
    construction of § 2251(a), when viewed in the light most hospitable
    to the verdict the evidence is nonetheless sufficient to permit a
    reasonable factfinder to conclude that Monson intended to create
    subsequent copies of the image (including, specifically, the copy
    that was discovered on his iPhone 7 Plus) at the time that he
    - 10 -
    created the initial depiction.5 There was evidence that, less than
    a year after Monson initially captured the image on his iPhone 6,
    he saved the image to his iCloud account, linked that iCloud
    account to his iPhone 7 Plus, populated the image onto his iPhone
    7 Plus from his iCloud account, and then continued to store the
    image on his iPhone 7 Plus.          From this evidence, a reasonable jury
    could conclude that Monson intended, at the time the initial
    depiction was created, to make and populate subsequent copies of
    that image on devices linked to his iCloud account including and
    especially any subsequent iPhones that he obtained to replace his
    iPhone   6.      See   Downs,   56   F.4th     at   1321-22   (finding   that   a
    reasonable jury could conclude that the defendant had the requisite
    intent to create subsequent copies at the time of initial capture
    based on circumstantial evidence, including that subsequent copies
    were actually created).
    On this point, the Sixth Circuit's decision in Lively
    does not suggest a contrary conclusion.             In Lively, the court held
    that the jurisdictional element in § 2251(a) was not satisfied
    based on a co-defendant's subsequent copying of the images at issue
    onto a hard-drive because "there [was] no reason to believe that
    Lively had the purpose of producing -- or having [the co-defendant
    5 To be clear, in assuming the narrow construction of
    § 2251(a) we do not mean to endorse it or to suggest that our prior
    precedent necessarily permits it.
    - 11 -
    produce] -- the Hard-Drive images."      
    852 F.3d at 554
    .   Lively thus
    is properly viewed as a case in which an independent actor produced
    the hard drive image, and that conduct could not priorly be imputed
    to the defendant who created the previous image.      Cf. Pattee, 820
    F.3d at 511, n.8 ("[M]erely transferring or copying a pornographic
    image that was produced by someone else is [not] tantamount to
    'producing' child pornography.").
    The iPhone 7 Plus Argument (Counts One through Four)
    Monson also argues that there was a lack of evidence
    that his iPhone 7 Plus travelled in interstate commerce, and thus
    that there was insufficient evidence to support a conviction for
    child exploitation based on the discovery of the images on that
    phone.
    At trial, the government sought to prove the interstate
    commerce nexus for the child exploitation counts by introducing
    records from Apple Inc. showing that a black iPhone 7 Plus bearing
    a specific 15-digit international mobile equipment identity (IMEI)
    number was manufactured in Kunshan, China in 2017 before being
    shipped to the United States, and then eliciting testimony from
    Smythe that Monson's iPhone 7 Plus (which Smythe had examined on
    multiple occasions) bore the same IMEI number as listed in the
    Apple records and thus was the phone to which those records
    referred.    Monson argues that this evidence was not sufficient to
    establish that his iPhone was the same iPhone referred to in the
    - 12 -
    Apple records because the evidence "forced the jury to speculate
    that [Smythe] could recall the fifteen digit IMEI for Mr. Monson's
    iPhone 7 Plus and accurately compare it to the IMEI listed on the
    Apple records, notwithstanding that the Apple records described
    the phone as 'BLACK' and the witness recalled the phone to be
    '[n]ot black.'"6   According to Monson, "[t]his kind of speculation
    cannot support a finding of guilt beyond a reasonable doubt."             We
    reject the argument.
    Generally, "[i]t is the responsibility of the jury --
    not the court -- to decide what conclusions should be drawn from
    evidence admitted at trial.      A reviewing court may set aside the
    jury's verdict on the ground of insufficient evidence only if no
    rational trier of fact could have agreed with the jury."           Cavazos
    v. Smith, 
    565 U.S. 1
    , 2 (2011) (emphasis added).                  The jury
    supportably could have found the evidence to point to the iPhone
    7 Plus described in the Apple records as the same iPhone that the
    agents seized from Monson.      While a reasonable juror could have
    viewed Smythe's ability to recall the specific IMEI number or
    failure   to   accurately   describe   the   color   of   the   phone   with
    skepticism, the record does not compel the conclusion that the
    testimony was insufficient to establish that the Apple records
    described Monson's iPhone 7 Plus. As we have often stated, "[w]hen
    6 Smythe's report and testimony described the iPhone 7 Plus
    as dark gray.
    - 13 -
    the record is fairly susceptible of two competing scenarios, the
    choice between those scenarios ordinarily is for the jury." United
    States v. Dwinells, 
    508 F.3d 63
    , 74 (1st Cir. 2007); see also
    United States v. Seary-Colón, 
    997 F.3d 1
    , 11-12 (1st Cir. 2021)
    ("We need not conclude that 'no verdict other than a guilty verdict
    could sensibly be reached, but must only [be] satisf[ied] . . .
    that the guilty verdict finds support in a plausible rendition of
    the record.'" (alterations in original) (quoting United States v.
    Hatch, 
    434 F.3d 1
    , 4 (1st Cir. 2006))).
    Concluding that the evidence presented at trial was
    sufficient to support Monson's convictions on each of the child
    exploitation counts, we affirm the district court's denial of
    Monson's Rule 29 motion for acquittal.
    B. The Suppression Ruling
    Monson also argues that the district court erred in
    denying   his   motion   to   suppress   statements,   because    those
    statements were made during a custodial interrogation without
    there having been a valid waiver of his Miranda rights.          Because
    we cannot upset the district court's finding that Monson was not
    in custody at the time that he made the statements at issue, we
    affirm the denial of the suppression motion.
    i.
    "In reviewing a district court's decision on a motion to
    suppress, we scrutinize findings of fact for clear error and
    - 14 -
    conclusions of law de novo."       United States v. Miles, 
    18 F.4th 76
    ,
    78 (1st Cir. 2021) (citing United States v. Simpkins, 
    978 F.3d 1
    ,
    6 (1st Cir. 2020)).
    "[T]he   [Supreme]    Court      [has]   made    clear    that   the
    ultimate determination of custody is a mixed question of fact and
    law.    The     initial    examination         of   the    'totality    of    the
    circumstances' is factual. The second inquiry, however -- whether,
    objectively,     these    circumstances         constitute     the     requisite
    'restraint on freedom of movement of the degree associated with a
    formal arrest' -- requires the 'application of the controlling
    legal standard to the historical facts.'"                    United States     v.
    Ventura, 
    85 F.3d 708
    , 711 n.2 (1st Cir. 1996) (quoting Thompson v.
    Keohane, 
    516 U.S. 99
    , 112 & n.11 (1995)); see United States v.
    Mittel-Carey, 
    493 F.3d 36
    , 39 (1st Cir. 2007).                 Accordingly, we
    review for clear error the district court's findings as to the
    circumstances surrounding the interrogation, and review de novo
    the court's conclusion as to whether, under those circumstances,
    a reasonable person would have felt free to end the interrogation
    and leave.    United States v. Infante, 
    701 F.3d 386
    , 396 & n.9 (1st
    Cir. 2012)
    ii.
    Statements   made    by   a     defendant    during   a   custodial
    interrogation are inadmissible at trial unless, in advance of the
    interrogation, the defendant was advised that he "has a right to
    - 15 -
    remain silent, that any statement he does make may be used as
    evidence against him, and that he has a right to the presence of
    an attorney, either retained or appointed" and the defendant
    knowingly and voluntarily waived those rights. Miranda v. Arizona,
    
    384 U.S. 436
    , 444 (1966); see also Dickerson v. United States, 
    530 U.S. 428
    , 432-33 (2000).
    "Accordingly, the need for a Miranda warning 'turns on
    whether a suspect is in custody.'"          United States v. Swan, 
    842 F.3d 28
    , 31 (1st Cir. 2016) (quoting United States v. Hughes, 
    640 F.3d 428
    , 435 (1st Cir. 2011)).         A two-step inquiry is used to
    determine whether a suspect is in custody.            See Howes v. Fields,
    
    565 U.S. 499
    , 509 (2012); United States v. Melo, 
    954 F.3d 334
    , 340
    (1st Cir. 2020).      First, it must be determined whether, based on
    the   objective   circumstances     surrounding   the    interrogation,      a
    reasonable   person     would    have   felt   free     to    terminate   the
    interrogation and leave.        Fields, 
    565 U.S. at 509
    .        Second, if it
    is determined that a reasonable person would not feel free to do
    so, it must then be determined whether the environment in which
    the   interrogation    occurred    "present[ed]   the        same   inherently
    coercive pressures as the type of station house questioning at
    issue in Miranda."     
    Id.
    Factors that we have identified previously as relevant
    to the custody inquiry include the setting of the interrogation,
    "the number of law enforcement officers present at the scene, the
    - 16 -
    degree of physical restraint placed upon the suspect, and the
    duration and character of the interrogation."               Swan, 
    842 F.3d at 31
     (quoting United States v. Masse, 
    816 F.2d 805
    , 809 (1st Cir.
    1987)).     However, this is "by no means an exhaustive list" and a
    court must consider the totality of circumstances surrounding the
    interrogation to determine whether it was custodial.                   Mittel-
    Carey, 
    493 F.3d at 39
    .          Further, those circumstances are to be
    evaluated    objectively,   "not    [based]     on   the    subjective      views
    harbored by either the interrogating officers or the person being
    questioned."    Stansbury v. California, 
    511 U.S. 318
    , 323 (1994).
    iii.
    Assessing the totality of the circumstances in light of
    the precedents above, we conclude that a reasonable person in
    Monson's     position   would     have   felt   free       to   terminate     the
    interrogation and leave and thus affirm the district court's
    suppression ruling.
    To begin, the questioning of Monson took place in a
    conference room at the Granby Public Safety Facility.              While it is
    true that the Granby police department was housed in that same
    complex, the record reflects that Monson did not enter the police
    station before or during the interrogation by Smythe, that "the
    police station really had no part in this interview other than
    that it was under the same roof inside this larger community
    building," and that the conference room "was not designed in any
    - 17 -
    way to be a law enforcement type room that was set up for police
    purposes" but "was just an open space with a table and some chairs
    and the door opened out into a common area within this building."
    Accordingly,       although     the    location    of     the    interrogation        was
    unfamiliar to Monson, it was more akin to a neutral location than
    a police station interview room, a factor that weighs in favor of
    concluding that the interrogation was non-custodial.                     See Infante,
    
    701 F.3d at 397
     (questioning in a neutral setting -- a hospital
    room -- weighed in favor of interrogation being non-custodial);
    United    States       v.   Jones,    
    187 F.3d 210
    ,    218    (1st    Cir.    1999)
    ("Although      the    location      apparently    was    not    familiar    to       [the
    suspect] and the area was not well-lit, a public highway is a
    neutral setting that police officers are not in a position to
    dominate."); United States v. Campbell, 
    741 F.3d 251
    , 267 (1st
    Cir. 2013) ("The defendants were questioned in a neutral location,
    a hotel parking lot.").
    Next,    the   record    reflects    that    two    members       of    law
    enforcement travelled with Monson to the community center and that
    only     two    law     enforcement     agents     were     present      during        his
    questioning.          In arguing that the interrogation was custodial,
    Monson highlights the fact that eight or nine agents and police
    officers arrived at his home to carry out the search warrant, and
    he contends that this number supports a finding that he was in
    custody.       However, because the focus of our inquiry is on Monson's
    - 18 -
    interrogation, see Swan, 
    842 F.3d at 31
     ("[I]n conducting the
    Miranda analysis, we focus on the time that the relevant statements
    were made"), the number of agents present when Monson made the
    statements that he seeks to suppress is the relevant number for us
    to consider, not the total number of agents and police officers
    who   participated    in   the    investigation       or   search    of    Monson's
    property.   See Hughes, 
    640 F.3d at 436
     ("[A]lthough four officers
    trekked to the island, only two of them participated in the
    questioning."); United States v. Crooker, 
    688 F.3d 1
    , 12 (1st Cir.
    2012) ("[A]lthough [numerous] officers were present inside and
    around [the suspect's] house, no more than two agents were in
    direct conversation with [the suspect] at one time."); cf. Mittel-
    Carey, 
    493 F.3d at 40
     (presence of eight officers in suspect's
    home weighed towards custodial nature of interrogation because
    interrogation took place at the home with all eight officers
    present).      That   only   two    agents    were     present      for    Monson's
    interrogation    weighs      in    favor     of   a    conclusion         that   the
    interrogation was non-custodial.           See Hughes, 
    640 F.3d at 436
    ;
    Crooker, 
    688 F.3d at 12
    ; Swan, 
    842 F.3d at 32
    ; see also United
    States v. Quinn, 
    815 F.2d 153
    , 157 (1st Cir. 1987) ("[W]e do not
    believe the physical presence of two more officers, besides the
    three who were there when the two suspects first arrived, could
    have led to a reasonable inference that a de facto arrest had
    occurred.").
    - 19 -
    Third, the record reflects that there was no physical
    restraint placed upon Monson at any time during the interrogation.
    The district court found that Monson "was not restrained in any
    way," and that "[the interrogation] occurred in this community
    room that clearly was not confining him. . . . There was no degree
    of restraint.   There was no indication that he was put in a corner
    and an agent sat next to him and he couldn't move.      There was no
    indication of locking doors or any type of other restraint."      We
    have previously explained that among the factors relevant to the
    custodial inquiry, "the element that carries the most weight is
    the level of physical control that the agents exercised over the
    defendant during the search and interrogation," Mittel-Carey, 
    493 F.3d at 40
    , and that a lack of any physical control, contact or
    restraint weighs heavily in favor of a conclusion of no-custody.
    See United States v. Nishnianidze, 
    342 F.3d 6
    , 14 (1st Cir. 2003);
    Swan, 
    842 F.3d at 33
    ; Infante, 
    701 F.3d at 398
    ; Hughes, 
    640 F.3d at 436
     ("[W]e think it significant that no meaningful physical
    restraint was applied to the defendant.").
    Monson argues that, despite the absence of any physical
    restraint, he lacked "true freedom of movement" because "the agents
    dictated when and how [he] moved."      In support, Monson highlights
    that he was transported to the public safety complex by the agents
    and told that they would drive him back home when they were
    finished.    But the force of this point is undermined by the fact
    - 20 -
    that Monson went to the police station with the agents voluntarily.
    See Oregon v. Mathiason, 
    429 U.S. 492
    , 495 (1977) (no custody
    where, inter alia, the suspect "came voluntarily to the police
    station"); McCown v. Callahan, 
    726 F.2d 1
    , 6 (1st Cir. 1984)
    (explaining that "we d[id] not see how one could say, as a matter
    of law, that [the suspect] was in custody when he was questioned"
    because, in addition to other factors, he "c[a]me to the station
    voluntarily"); Quinn, 
    815 F.2d at 160
     ("Even when questioning
    occurs in the stationhouse, a suspect need not be given Miranda
    warnings if he went there voluntarily and there was no such
    restriction     on   his   freedom   as   to     render   him   in    'custody.'"
    (emphasis added) (quoting California v. Beheler, 
    463 U.S. 1121
    ,
    1125 (1983))); United States v. Ellison, 
    632 F.3d 727
    , 730 (1st
    Cir.    2010)   (Souter,    J.)   (fact   that    suspect    was     the    one   who
    suggested the interview was a relevant factor to our conclusion of
    no-custody).      Indeed, we have previously explained that where a
    suspect was "not ordered to ride with [the officers]" but that
    instead transportation by the police "was merely a suggestion to
    which    [the    suspect]    agreed,"     this     further      undermines        any
    suggestion of custody or a lack of freedom of movement.                    Swan, 
    842 F.3d at 31
    .
    Fourth, the duration and character of the interrogation
    suggest that Monson was not in custody.             The interrogation lasted
    - 21 -
    for approximately one hour,7 a factor which weighs against the
    custodial   nature   of   the    interrogation.     We   have    previously
    characterized   interrogations       that    were   ninety      minutes   as
    "relatively short" and held that the length of those interrogations
    did not suggest custody.        Hughes, 
    640 F.3d at 437
    ; Swan 
    842 F.3d at 33
    . Further, the district court found that the "[t]he character
    of the questioning was conversational," and that it "was not
    aggressive at all or adversarial."          These too are findings which
    suggest that the interrogation was non-custodial.            See Swan, 
    842 F.3d at 33
    ; Infante, 
    701 F.3d at 397
     ("The atmosphere was non-
    confrontational."); Hughes, 
    640 F.3d at 437
     ("[T]he ambiance was
    relaxed and non-confrontational throughout the interview.                 The
    7 Monson argues that we should consider the time that he spent
    undergoing the post-interrogation polygraph examination and the
    second, post-polygraph, round of questioning when assessing the
    total length of his interrogation and, accordingly, that we should
    consider the over five total hours Monson spent at the complex to
    constitute a "lengthy" interrogation. However, to the extent that
    Monson means to suggest that the district court's factual finding
    that the interrogation lasted one hour was clearly erroneous, this
    argument is undeveloped and thus waived.      See United States v.
    Zannino, 
    895 F.2d 1
    , 17 (1st Cir. 1990) ("[I]ssues adverted to in
    a perfunctory manner, unaccompanied by some effort at developed
    argumentation, are deemed waived.").       Moreover, as discussed
    above, supra note 4, Monson explicitly represented to the district
    court that his motion to suppress focused solely on the initial
    interrogation by Smythe, precluding Monson from now arguing that
    the motion concerned the whole of his interactions with law
    enforcement on the date he was arrested.      See United States v.
    Chen, 
    998 F.3d 1
    , 6 (1st Cir. 2021) ("An issue may be waived when
    a party purposefully abandons it, either expressly or by taking a
    contrary position at trial. A party who waives an issue at trial
    cannot later complain on appeal by pressing a position that was
    not taken at trial." (internal citations omitted)).
    - 22 -
    troopers' demeanor remained calm. . . . The troopers were polite
    and never hectored the defendant.").
    Finally,    among   the   totality    of    the   circumstances
    surrounding the interrogation are additional factors that support
    the conclusion that the interrogation was non-custodial.               These
    include the facts that (1) the agents informed Monson that he was
    neither in custody nor under arrest, see Infante, 
    701 F.3d at 398
    (emphasizing   such   statements    as   relevant    to   conclusion   that
    suspect was not in custody); (2) Monson was never pat frisked or
    physically searched and maintained his cell phone on him throughout
    the interrogation, see Swan, 
    842 F.3d at 33
     (suspect's ability to
    access her cell-phone during the interrogation weighed against
    finding of custody); (3) the interrogation took place in the middle
    of the afternoon,8 see Infante, 
    701 F.3d at 398
     (questioning of
    suspect "occurred in the late morning and early afternoon, as
    opposed to a time that might have appeared more menacing," weighing
    in favor of no-custody); and (4) although the law enforcement
    representatives were armed, their weapons were holstered and were
    8 Monson argues that, because he worked evenings, "the time
    was effectively an early hour" and we should treat it as such when
    assessing whether he was in custody. This argument, however, runs
    directly contrary to our obligation to evaluate the circumstances
    objectively and "not [based] on the subjective views harbored by
    either the interrogating officers or the person being questioned."
    Stansbury, 
    511 U.S. at 323
    . Objectively, a reasonable person would
    not consider the early afternoon to constitute an early hour and
    would not view the decision to conduct the search and interrogation
    at that time as particularly menacing.
    - 23 -
    not pointed at Monson.       See Hughes, 
    640 F.3d at 435-36
     (no custody
    where   visible       weapons    remained     holstered     throughout   the
    interaction); cf. Crooker, 
    688 F.3d at 11
     (no custody where the
    "officers holstered their guns after the entry team cleared the
    house   and    left   them   holstered   throughout   the    afternoon-long
    search").
    To be sure, not all of the facts weigh in favor of a
    conclusion that the interrogation was not custodial.             The record
    reflects that the agents made it clear to Monson that he was the
    focus of their investigation, and that they never told Monson that
    he was free to leave.            However, neither of these facts are
    determinative, nor do they outweigh the many facts suggesting that
    Monson was not in custody.         See United States v. Lanni, 
    951 F.2d 440
    , 443 (1st Cir. 1991) (holding that the district court did not
    commit clear error in finding that the suspect was not in custody
    despite fact that officers never told suspect he was free to leave
    or terminate the interrogation); Mathiason, 
    429 U.S. at 494-95
    (holding suspect was not in custody despite fact that he was told
    he was a suspect in a theft and, falsely, that the officers had
    evidence incriminating him).
    Accordingly,      considering    the    totality     of    the
    circumstances attending the interrogation, we uphold the district
    court's determination that Monson was not in custody, and thus
    that a Miranda warning was not required, at the time of his
    - 24 -
    interrogation by Smythe because a reasonable person in Monson's
    position would have felt free to terminate the interrogation and
    leave.
    C. THE SENTENCE
    Finally,    Monson    levies     two   challenges   against    the
    district court's calculation of his Guidelines sentencing range,
    contending     that,     because   of    the   alleged    miscalculation,    his
    incarcerative sentence of 480 months is procedurally unreasonable.
    Because we conclude that any error in calculating the Guidelines
    range did not affect the district court's sentencing and thus was
    harmless, we affirm the sentence imposed.
    i.
    Because Monson did not raise an objection to either the
    Guidelines calculation or to the sentence in the district court,
    we review his challenge only for plain error.                United States v.
    Taylor, 
    848 F.3d 476
    , 496 (1st Cir. 2017).               To succeed under that
    standard, Monson must show "(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).
    - 25 -
    ii.
    "'[F]ailing to calculate (or improperly calculating) the
    Guidelines range' is a 'significant procedural error.'"             United
    States v. Tavares, 
    705 F.3d 4
    , 25 (1st Cir. 2013) (alteration in
    original) (quoting Gall v. United States, 
    552 U.S. 38
    , 51 (2007)).
    That said, in order to succeed on a plain-error challenge to
    sentencing,    it   is   the   defendant's   burden   to   demonstrate   a
    reasonable likelihood that, absent the court's error, the district
    court would have imposed a more favorable sentence than it did.
    See United States v. Marchena-Silvestre, 
    802 F.3d 196
    , 200 (1st
    Cir. 2015).    "In most cases a defendant who has shown that the
    district court mistakenly deemed applicable an incorrect, higher
    Guidelines range has demonstrated a reasonable probability of a
    different outcome."       Molina-Martinez v. United States, 
    578 U.S. 189
    , 200 (2016).    However, "[t]here may be instances when, despite
    application    of   an   erroneous   Guidelines   range,    a   reasonable
    probability of prejudice does not exist" such as when the record
    demonstrates "that the district court thought the sentence it chose
    was appropriate irrespective of the Guidelines range" or where the
    district court's explanation "make[s] it clear that the judge based
    the sentence he or she selected on factors independent of the
    Guidelines."    
    Id.
          Accordingly, the government is permitted to
    counter the presumption that a Guidelines calculation error was
    prejudicial by pointing to a clear statement from the sentencing
    - 26 -
    court providing "an indication that the trial court 'intended to
    untether' the sentence from the Guidelines range."                Taylor, 
    848 F.3d at 498
     (quoting United States v. Hudson, 
    823 F.3d 11
    , 19 (1st
    Cir. 2016)).
    iii.
    Monson's procedural challenge to the district court's
    calculation of the applicable Guidelines range at sentencing is
    two-fold: first, he contends that the district court incorrectly
    determined his total offense level due to a grouping error; second,
    he argues that the district court incorrectly calculated his
    Guidelines sentence due to the court's misapplication of U.S.S.G.
    §5G1.1.       However, both of these challenges fail for the same
    reason: the record demonstrates that the sentence imposed by the
    district court was independent of, and based on factors unrelated
    to, the Guidelines sentence and that the district court explicitly
    stated its intent to uncouple the sentence from the Guidelines by
    noting that they were inapplicable in a case such as this.            Because
    the district court's sentence was not based on a Guidelines range,
    any   error    that   the   court   may   have   made   in   calculating   that
    Guidelines range (through either its determination of Monson's
    total offense level or its application of U.S.S.G. §5G1.1) had no
    effect.   Each of Monson's challenges thus fails on the third prong
    of our plain error review, because he cannot demonstrate that he
    - 27 -
    would have received a lesser sentence but for the district court's
    alleged errors.
    The district court opened Monson's sentencing hearing by
    stating   "the   Court   accepts    the    presentence     report   guideline
    calculation as being accurate" but noted that it "recognized that
    the numbers are extraordinarily high and generally inapplicable in
    a situation like this because of how the numbers come out."                 The
    court thus clarified that its acceptance of the Guidelines range
    was   a   mere    technicality,     indicating      that    its     sentencing
    determination was independent of that Guidelines calculation.               The
    court discussed at length the various factors that it considered
    in determining an appropriate sentence including the seriousness
    of the offense, the impact of the offense on the victims, and
    Monson's background (including his lack of prior criminal history,
    his military service, his steady record of employment, and his
    amenability to rehabilitation).       The record thus reflects that it
    was these factors, and not the Guidelines calculation (which the
    court expressly indicated was inapplicable here) that drove the
    court's sentencing determination.
    Monson   argues   that    the    court   nonetheless      used   the
    Guidelines as a starting point to determine his sentence, and thus
    its erroneous calculation of the applicable Guidelines range led
    to a higher sentence than would have been imposed but for the
    errors.   In support of this argument, he points to the fact that
    - 28 -
    the court mentioned the higher Guidelines range that was applied
    in a different case concerning similar conduct as a means of
    differentiating the defendant in that other case from Monson.
    However, read in the context of the sentencing hearing as a whole,
    we do not view the court's brief mention of that higher Guidelines
    range as demonstrating that the court used Monson's Guidelines
    range as a starting point in determining an applicable sentence.
    The court discussed the other case -- United States v. Deordio,
    No. 3:18-cr-30056-MGM (D. Mass. Feb. 4, 2021) -- in response to
    the government's recommendation that the court impose the same
    sentence on Monson that it had imposed on the defendant in Deordio
    (720 months).   The court responded to this suggestion by noting
    that there was "a much different criminal history between [Monson
    and Deordio], much different in life circumstances, and much
    different in amenability to rehabilitation, but very different
    with respect to prior criminal history."   The court then proceeded
    to note the different Guidelines ranges in the two cases -- 5,040
    months for Deordio compared to 4,080 months for Monson -- while
    again explaining that "the use of the Guidelines in these types of
    cases . . . falls by the wayside a little."   Read in this context,
    we construe the district court's mention of the Guidelines ranges
    as merely intended to further illustrate that the very different
    backgrounds and criminal histories of the two defendants rendered
    them differently situated at sentencing.   We do not, however, read
    - 29 -
    that reference to the Guidelines as indicating that the court used
    either    defendant's    Guidelines     range   as   a   starting   point   in
    determining the applicable sentence for Monson, especially given
    that     the    court   repeatedly     and    explicitly    disclaimed      the
    applicability of the Guidelines to its sentencing determination.
    Because we conclude that the sentence imposed by the
    district court was not tethered to the Guidelines range, any error
    that the district court may have made in calculating that range
    did not affect Monson's rights or result in a higher sentence than
    would have been imposed in the absence of the alleged errors.
    III. CONCLUSION
    For the foregoing reasons, the convictions and sentence are
    affirmed.
    - 30 -