United States v. Ubiles-Rosario , 867 F.3d 277 ( 2017 )


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  •           United States Court of Appeals
    For the First Circuit
    No. 16-1493
    UNITED STATES OF AMERICA,
    Appellee,
    v.
    KENNETH R. UBILES-ROSARIO,
    also known as Keneth R. Ubiles-Rosario,
    Defendant, Appellant.
    APPEAL FROM THE UNITED STATES DISTRICT COURT
    FOR THE DISTRICT OF PUERTO RICO
    [Hon. Carmen Consuelo Cerezo, U.S. District Judge]
    Before
    Torruella, Thompson, and Barron,
    Circuit Judges.
    Linda Backiel on brief for appellant.
    Rosa E. Rodríguez-Vélez, United States Attorney, Mariana E.
    Bauzá-Almonte, Assistant United States Attorney, Chief, Appellate
    Division, and Francisco A. Besosa-Martínez, Assistant United
    States Attorney, on brief for appellee.
    August 16, 2017
    THOMPSON, Circuit Judge.       The defendant, Kenneth Ubiles-
    Rosario (Ubiles),1 argues on appeal that the government breached
    the plea agreement and that the sentence imposed by the district
    court       is   procedurally   and    substantively    unreasonable.   After
    careful consideration, we affirm.
    BACKSTORY2
    This case was precipitated by a violent and tragic
    episode. It all started when Ubiles enlisted Héctor Negrón Mercado
    (Negrón) to help him commit a robbery.                 The pair, with Ubiles
    driving his car, intercepted a vehicle driven by Luis Aníbal
    Torres-González (Torres), a local businessman known to frequently
    carry large sums of money.             With Torres stopped, Ubiles left his
    car and approached Torres's vehicle, forced Torres to the passenger
    seat, and drove to a secluded area near the edge of a cliff; Negrón
    followed in Ubiles's car.             Ubiles forced Torres from his vehicle
    at gunpoint while Negrón pillaged the vehicle of Torres's money
    and valuables.         With the loot safely transferred to Ubiles's car,
    1
    Although Ubiles's surname is hyphenated in the record below,
    his briefs on appeal omit the hyphen.
    2
    In this appeal from the sentence imposed following Ubiles's
    guilty plea, we glean the relevant facts from the plea agreement,
    the undisputed sections of the presentence investigation report
    (PSR), and the transcripts of his change-of-plea and sentencing
    hearings. See United States v. Lasalle González, 
    857 F.3d 46
    , 52
    (1st Cir. 2017).
    - 2 -
    Ubiles shot Torres in the head, killing him.3         Ubiles and Negrón
    then fled the scene in the two vehicles, abandoning Torres's car
    along the way.
    A federal grand jury indicted Ubiles and Negrón on one
    count of carjacking by shooting and killing Torres and one count
    of discharging a firearm during a crime of violence. Ubiles agreed
    to plead guilty to the carjacking count in exchange for the
    prosecution's dismissal of the firearm count.
    Under   the   agreement,     the   government   and   Ubiles
    stipulated to use a total offense level of 39 for purposes of their
    sentencing recommendations, even though both recognized that the
    correct total offense level would have been 40 absent their
    agreement.     The parties also agreed to recommend to the district
    court a sentence between 262 and 300 months, with Ubiles arguing
    for a sentence at the low end of that range and the government
    "reserv[ing] the right to allocute for a term of imprisonment up
    to three hundred (300) months."     Finally, the parties agreed that
    neither side would seek a "variant sentence under 18 U.S.C.
    § 3553(a)" or any "further adjustments or departures to [Ubiles's]
    total adjusted offense level."
    Notwithstanding the agreement between the parties with
    respect to sentencing recommendations, Ubiles acknowledged in the
    3 The force of the blast caused the body to fall over the
    cliff edge, where it was discovered later that day.
    - 3 -
    plea agreement that "the sentence will be left entirely to the
    sound discretion of the" district court and that the statutory
    maximum    penalty    was       life   imprisonment.      Additionally,        the
    government "reserve[d] the right to carry out its responsibilities
    under guidelines sentencing."           In particular, the plea agreement
    provided that
    the United States reserves the right: (a) to bring its
    version of the facts of this case including its file and
    any investigative files to the attention of the
    probation office in connection with that office's
    preparation of a [PSR]; (b) to dispute sentencing
    factors or facts material to sentencing; [and] (c) to
    seek resolution of such factors or facts in conference
    with opposing counsel and the probation office.
    During the change-of-plea colloquy, the magistrate judge
    informed Ubiles that the district-court "[j]udge does not have to
    follow the[] [sentencing] recommendations [in the plea agreement]
    and retains authority to impose any sentence up to the maximum
    allowed by law."      Ubiles indicated that he understood.
    In its sentencing memorandum, the government reiterated
    that it "reserved the right [under the plea agreement] to ask for
    a sentence of 300 months of incarceration."                 To that end, the
    government then identified the pertinent § 3553(a) factors that,
    in   its   view,    "[w]arrant[ed]      a   [s]entence    of    300   months    of
    [i]ncarceration."         In particular, it noted the prevalence of gun
    violence in Puerto Rico and the premediated, deliberate, and
    violent    nature    of   the    offense.      It   explained   why   the   crime
    - 4 -
    "require[d] punishment of no less than 300 months."                         (Emphasis
    added.)    Finally, it concluded by "recommend[ing] that th[e]
    [c]ourt sentence the defendant to serve a term of 300 months of
    imprisonment."         Ubiles   did   not     object    to   any    aspect        of   the
    government's memorandum at any point between the date on which it
    was filed and the sentencing hearing, which was held almost one
    year later.
    At    the    sentencing     hearing,        Ubiles      turned    to        face
    Torres's   family,      expressed     his    remorse,    and     asked      for    their
    forgiveness.     The prosecutor told the district court that the
    government's recommendation of 300 months appropriately balanced
    Ubiles's acceptance of responsibility and expression of remorse
    with the severity of the crime.             Torres's wife and one of his sons
    then addressed the court. Torres's son "ask[ed] for all the weight
    of the law and justice for our father."                After the family members
    spoke, the prosecutor told the district court:                  "We hope that Your
    Honor will consider our recommendation and sentence the defendant
    to 300 months."
    In pronouncing sentence, the district court stated that
    it had "reviewed the applicable advisory guideline calculations"
    and "ha[d] considered all sentencing factors in 18 U.S. Code,
    Section 3553(a)."       The district court determined that the parties'
    stipulation to use a total offense level of 39, instead of 40, was
    "without   any   justification."            Although     the    court    explicitly
    - 5 -
    considered Ubiles's age, his two young daughters, his employment
    history,   his   diagnosis     before    the    crime   of   major   depressive
    disorder, his lack of prior criminal history, and his history of
    substance abuse, the court emphasized "the grave nature of this
    offense and the circumstances, which reflect extreme cruelty on
    the part of the defendant Ubiles towards the victim."                The court
    also stressed the need "to effectively provide deterrence and to
    protect the public from further crimes by this defendant, and also
    to   provide   just    punishment."       For   these   reasons,     the    court
    sentenced Ubiles to a term of 365 months of imprisonment, which
    the court deemed "sufficient but not greater than necessary to
    meet [the] objectives of punishment and of deterrence in this
    case."
    After      the   district    court    imposed     sentence,     Ubiles
    objected to the court's refusal to follow the parties' sentencing
    recommendations.      Ubiles also explained the reason why the parties
    selected a total offense level of 39 instead of 40: By pleading
    guilty, Ubiles had waived several important constitutional rights
    and had spared Torres's family of the ordeal and anguish of sitting
    through Ubiles's trial.         The district court reiterated that it
    deemed a total offense level of 40 to be appropriate.
    After this exchange between defense counsel and the
    district court, the prosecutor interjected that "[t]he Government
    stands by, obviously, its recommendation of 300 months."                   After
    - 6 -
    observing that the PSR also used a total offense level of 40,
    rather than 39, the prosecutor clarified: "Obviously, we're not -
    - we stand by our plea agreement, Your Honor.                I'm not trying in
    any way to breach that plea agreement.               I just wanted that to be
    clear for the record."
    Dissatisfied with the prosecutor's effort to defend the
    plea   agreement,    Ubiles    stated    that       "the   prosecution    is   not
    following, is not advocating for that sentence and is in fact
    breaching the plea agreement."           The prosecutor responded: "[T]he
    agreement to stipulate to a level 39 was all done by me.                 We stand
    by that. . . . We've asked for 300 [months], we believe that's an
    appropriate sentence."        Ubiles shot back that "the prosecutor has
    not in any way advocated for the 300 months and is backing away
    from the plea agreement."          The prosecutor once again disagreed:
    I take issue with that, I have said several times
    throughout the course of this sentence that I'm asking
    the Court to impose a 300-month sentence; to say
    otherwise is just dishonest. I've said here now, after
    this Court has imposed sentence, three times, that that
    is our recommendation, we stand by it.
    Ubiles   filed     a    motion    for    reconsideration     of    his
    sentence, arguing that the district court "did not explain the
    reasons for imposing the highest permissible sentence within the
    higher Guidelines range" and that a sentence within the range
    recommended by the parties would have been more appropriate than
    the sentence imposed by the district court.                With the motion for
    - 7 -
    reconsideration still pending, Ubiles timely appealed from the
    district court's imposition of sentence.
    The court denied the motion for reconsideration in an
    order       that   reiterated   much   of   the   court's   analysis   at   the
    sentencing hearing.       The court also considered Ubiles's expression
    of remorse at sentencing, but the court stated that it perceived
    "shallow sincerity" as Ubiles spoke.4
    ANALYSIS
    Ubiles's arguments on appeal can be grouped into two
    categories.5        First, he argues that the government breached the
    plea agreement, both at the sentencing hearing and earlier in the
    government's sentencing memorandum.               Next, he argues that the
    4
    Several months later, Negrón, who pled guilty to one count
    of aiding and abetting carjacking resulting in death by a firearm,
    was sentenced by the same district-court judge to 144 months of
    imprisonment.    Ubiles seizes on the discrepancy between his
    sentence and Negrón's to support his argument on appeal that the
    district court failed to adequately explain the reasons for giving
    him a 365-month sentence, and we'll get to that argument in a
    moment.
    5
    Like most plea agreements, Ubiles's had a waiver-of-appeal
    provision. But, because the sentence imposed by the district court
    was in excess of the sentencing range set forth in the agreement,
    Ubiles was not (to use the lingo of the waiver-of-appeal provision)
    "sentenced in accordance with the terms, recommendations, and
    conditions set forth in the Sentence Recommendation provisions of
    th[e] Plea Agreement." Therefore, as the government acknowledges,
    this appeal is not barred by the waiver-of-appeal provision of the
    plea agreement. See United States v. Cortés-Medina, 
    819 F.3d 566
    ,
    568-69 (1st Cir. 2016).
    - 8 -
    district court imposed a sentence that is both procedurally and
    substantively unreasonable.              We address each category in turn.
    A.      Breach of the Plea Agreement
    Ubiles's       principal     argument    on    appeal   is    that     the
    government breached the plea agreement by paying lip service to
    its obligation to recommend a sentence no higher than 300 months.
    Because "[a] defendant who enters a plea agreement waives a panoply
    of constitutional rights . . . , we hold prosecutors to the most
    meticulous standards of both promise and performance" in the plea-
    agreement context.            United States v. Marín-Echeverri, 
    846 F.3d 473
    ,   478    (1st    Cir.     2017)    (internal     quotation     marks     omitted)
    (quoting United States v. Almonte-Nuñez, 
    771 F.3d 84
    , 89 (1st Cir.
    2014)).      These strict standards "require more than lip service to,
    or technical compliance with, the terms of a plea agreement."                       
    Id. (quoting Almonte-Nuñez,
    771 F.3d at 89); see also 
    id. ("[W]e frown
    on   technical       compliance     that    undercuts       the   substance    of   the
    deal."); United States v. Quiñones-Meléndez, 
    791 F.3d 201
    , 204
    (1st Cir. 2015) ("The government is barred not only from 'explicit
    repudiation of the government's assurances' contained in a plea
    agreement      but    also    —   'in    the   interest     of    fairness'    —    from
    undertaking 'end-runs around them.'" (quoting United States v.
    Rivera-Rodríguez, 
    489 F.3d 48
    , 57 (1st Cir. 2007))).                    Instead, "a
    defendant is entitled not only to the government's 'technical
    compliance' with its stipulations but also to the 'benefit of the
    - 9 -
    bargain' struck in the plea deal and to the good faith of the
    prosecutor."        United States v. Matos-Quiñones, 
    456 F.3d 14
    , 24
    (1st Cir. 2006) (citation omitted) (quoting United States v. Clark,
    
    55 F.3d 9
    , 11 (1st Cir. 1995)); see also United States v. Frazier,
    
    340 F.3d 5
    , 11 (1st Cir. 2003) ("[A]s in all contracts, plea
    agreements are accompanied by an implied obligation of good faith
    and fair dealing" (quoting United States v. Ahn, 
    231 F.3d 26
    , 35-
    36 (D.C. Cir. 2000))).
    There is, of course, "[n]o magic formula" for assessing
    whether a prosecutor has complied with a sentencing recommendation
    in a plea agreement.         United States v. Gonczy, 
    357 F.3d 50
    , 54
    (1st Cir. 2004).        In the end, we examine the totality of the
    circumstances, 
    Marín-Echeverri, 846 F.3d at 478
    , to determine
    whether "the prosecutor's 'overall conduct [is] . . . reasonably
    consistent with making such a recommendation, rather than the
    reverse,'" 
    Gonczy, 357 F.3d at 54
    (quoting United States v. Canada,
    
    960 F.2d 263
    , 268 (1st Cir. 1992)).
    But   that's   not   the    complete   picture.         Although
    prosecutors undeniably have "a duty to carry out the obligations
    [the government] has undertaken [in a plea agreement] in both
    letter and spirit," they also, "as officers of the court, remain
    bound   by    their   corollary    duty   to   provide   full   and   accurate
    information about the offense and the offender to the sentencing
    court."      
    Almonte-Nuñez, 771 F.3d at 86
    .      And "a plea agreement may
    - 10 -
    not   abridge"         the    "solemn       obligation      to     provide       relevant
    information to the sentencing court."                
    Id. at 90;
    see also United
    States v. Miranda-Martinez, 
    790 F.3d 270
    , 274 (1st Cir. 2015).
    This court has recognized that these twin obligations can sometimes
    "pull in different directions."                  United States v. Cruz-Vázquez,
    
    841 F.3d 546
    , 549 (1st Cir. 2016); see also United States v. Gall,
    
    829 F.3d 64
    ,       73    (1st   Cir.    2016)    (characterizing            these   two
    obligations as "competing" in the circumstances of that case);
    
    Almonte-Nuñez, 771 F.3d at 86
    ("[T]hese dual obligations sometimes
    require prosecutors to walk a fine line.").
    In    resolving        this    tension,       "there      is   a    material
    difference between answering questions asked by a sentencing court
    or bringing facts to the court's attention," on the one hand, and,
    on the other, engaging in conduct that violates the terms of the
    plea agreement, by, for example, "affirmatively supporting an
    adjustment"       to    the    guideline     range    when       the   plea     agreement
    "obligate[s]       the      government      to   refrain    from       arguing    further
    guideline adjustments."             
    Almonte-Nuñez, 771 F.3d at 90
    (internal
    quotations omitted); see also 
    Miranda-Martinez, 790 F.3d at 274
    (explaining that, on the one hand, "'[t]he mere furnishing' of
    facts concerning the background, character, and conduct of the
    defendant 'gives us little pause'" (quoting United States v.
    Saxena, 
    229 F.3d 1
    , 6 (1st Cir. 2000)), while, "[o]n the other
    hand, we have acknowledged that certain factual 'omission[s],
    - 11 -
    helpful to the defendant,' may be 'an implicit part of the bargain'
    in a plea agreement" (quoting United States v. Yeje-Cabrera, 
    430 F.3d 1
    , 28 (1st Cir. 2005))).           We look to "[t]he precise terms of
    the plea agreement" at issue to "help resolve these competing
    tugs."      
    Miranda-Martinez, 790 F.3d at 275
    .
    Within this framework, Ubiles identifies three actions
    of the government that, in his view, collectively amount to a
    breach of the plea agreement: (1) the prosecutor's refusal to
    explain or defend the parties' agreement to use an adjusted total
    offense level of 39, instead of 40, when the district court deemed
    that aspect of the agreement to be "without any justification";
    (2) the "aggravating and extraneous factors" relied upon by the
    government; and (3) the request in the sentencing memorandum that
    the district court impose a sentence of "no less than 300 months."
    1.      Standard of Review
    At    the   outset,    the   parties   dispute   the    governing
    standard of review. Emphasizing that he objected at the sentencing
    hearing to what he perceived to be the government's breach of the
    plea agreement, Ubiles insists that we review de novo whether the
    prosecutor breached the plea agreement.               See 
    Cruz-Vázquez, 841 F.3d at 548
        ("Whether   the   government    has   breached   its   plea
    agreement with [a defendant] presents a question of law, and our
    review is de novo.").            The government stakes out a contrary
    position.          Although it concedes that "[t]his [c]ourt has not
    - 12 -
    explicitly determined [precisely] when a defendant must raise a
    claim that the government is in breach of a plea agreement in order
    to sufficiently preserve the issue for appeal," it argues, citing
    our case law from the closing-argument context, that Ubiles failed
    to preserve the issue because he "did not contemporaneously object
    to the government's allocution or sentence recommendation at the
    time of the prosecutor's remarks nor prior to the district court
    imposing sentence," such that the issue must be assessed under the
    plain-error standard.      See United States v. Betancourt-Pérez, 
    833 F.3d 18
    , 23-24 (1st Cir. 2016) (subjecting unpreserved claim that
    government breached plea agreement to plain-error review).           Ubiles
    counters that it makes no sense to impart the preservation standard
    from the closing-argument context to the very different setting of
    the government's breach of a plea agreement at a sentencing
    hearing.
    Wholly apart from this particular preservation tussle,
    the government also argues that Ubiles failed to preserve any
    allegation   of   breach    based     on     the   government's   sentencing
    memorandum because Ubiles did not object to any aspect of the
    memorandum either before or during the sentencing hearing.               But
    Ubiles has a rejoinder to this argument, too: According to Ubiles,
    "[o]bjection to a prosecution sentencing memorandum has never been
    required and would make no sense," evidently because, in his view,
    (1) it is "unwise to anticipatorily antagonize the prosecutor,"
    - 13 -
    (2) "[p]rior to the hearing, one must count on the good faith of
    the prosecution to perform with some degree of enthusiasm at the
    hearing,"      and    (3)   the    government's    "failure    to     support   a
    [sentencing] recommendation does not occur in a single instant,
    but is cumulative."
    We need not, however, enter this fray.             The government
    maintains that, even under de novo review, Ubiles's claim fails
    because the government did not breach the plea agreement. We agree
    and therefore assume, favorably to Ubiles, that he preserved all
    aspects   of    his    claim     that   the   government   breached    the   plea
    agreement.6      See United States v. Delgado-Flores, 
    777 F.3d 529
    ,
    529 (1st Cir. 2015) (employing this approach).
    2.    Existence of Breach
    Ubiles first complains of the government's conduct at
    the sentencing hearing.           He argues that the prosecutor failed to
    defend the agreed-upon sentencing range — by, for example, noting
    Ubiles's strong prospects for rehabilitation or the benefits to
    the government and Torres's family that flowed from Ubiles's
    decision to plead guilty — when the district court rejected the
    parties' agreement to a lower total offense level than the level
    called for by the guidelines.            Relying on Gonczy, Ubiles contends
    that, although the prosecutor reiterated the government's 300-
    6 In charting this course, we express no opinion on the
    parties' preservation arguments.
    - 14 -
    month recommendation several times at the sentencing hearing, "no
    fair reading of the prosecutor's argument to the court would lead
    an impartial observer to think that [he] thought [300 months] was
    an adequate sentence."      (Alterations in original) (quoting 
    Gonczy, 357 F.3d at 54
    ).      He also insists that the prosecutor spent most
    of his time at the sentencing hearing emphasizing Torres's status
    in the community, the effect the crime had on the Torres family,
    the "completely senseless and selfish" nature of the crime, and
    Ubiles's actions immediately after the crime.          We disagree.
    The government's conduct in Gonczy is very different
    from what the prosecutor did in this case.               Under the plea
    agreement in Gonczy, the government agreed to recommend a sentence
    at the low end of the guidelines sentencing range (GSR) calculated
    by the district 
    court. 357 F.3d at 51
    .    At the sentencing hearing,
    after the court calculated a GSR of 70 to 87 months, 
    id., the prosecutor
    began her argument by recommending, consistent with the
    plea agreement, a sentence of 70 months, 
    id. at 53.
                  But the
    prosecutor    never   returned   to    that   recommendation   during   the
    remainder of her argument.            See 
    id. at 54.
        Instead, as we
    explained, "[t]he initial recommendation . . . was undercut, if
    not eviscerated, by the [prosecutor]'s substantive argument to the
    district court."      
    Id. After characterizing
    the defendant as the
    "brains behind th[e fraudulent] operation" and explaining how the
    fraud "ruined many lives," 
    id. at 53,
    the prosecutor's sentencing
    - 15 -
    argument culminated with the statement that "the defendant at a
    minimum deserves what the guidelines provide for and those are his
    just deserts [sic]," 
    id. at 54.
                Therefore, contrary to its
    obligation under the plea agreement to recommend a sentence at the
    low end of the GSR, the prosecutor argued that the entire GSR —
    which spanned 17 months — was the "minimum" amount of time for
    which the defendant should be sentenced.          
    Id. We agreed
    with the
    district court's assessment of the prosecutor's argument: "that
    'no fair reading of [the prosecutor's] argument to the [c]ourt
    would lead an impartial observer to think that [she] thought 70
    months' was an adequate sentence.'"         
    Id. We concluded
    that the
    prosecutor breached the plea agreement because, "[w]hile paying
    lip service to a term of 70 months' imprisonment, the [prosecutor]
    substantively argued for a sentence at the higher end of the
    guidelines."   
    Id. Ubiles's case,
    by contrast, did not involve a lone
    recommendation consistent with the plea agreement followed by
    argument inconsistent with that recommendation, see 
    id. at 53-54,
    or, worse yet, a sentencing argument in which the prosecutor did
    not even make the recommendation required by the plea agreement,
    see 
    Canada, 960 F.2d at 268-69
    (finding breach of plea agreement
    where prosecutor, despite acknowledging government's promise to
    recommend    only    36   months   of   incarceration,    "never   herself
    affirmatively recommended a 36 month sentence and her comments
    - 16 -
    seemed     to   undercut    such     a   recommendation";    prosecutor's
    "references to the agreement were grudging and apologetic," and
    she "inject[ed] material reservations about the agreement to which
    the government ha[d] committed itself").           Instead, in both the
    sentencing memorandum and several times at the sentencing hearing,
    the prosecutor explicitly recommended, consistent with the plea
    agreement, a 300-month sentence.         Cf. 
    Rivera-Rodríguez, 489 F.3d at 57
    (distinguishing Canada because government asked court to
    impose sentence it was entitled to recommend under plea agreement
    "not once, but twice during the course of its argument").
    After the district court rejected the parties' agreed-
    upon total offense level of 39 as "without any justification" and
    the back-and-forth discussion that ensued on that subject between
    the court and defense counsel, the prosecutor, while acknowledging
    that the PSR calculated a total offense level of 40, reiterated
    that "[t]he Government stands by, obviously, its recommendation of
    300 months " and further clarified that "we stand by our plea
    agreement, Your Honor.       I'm not trying in any way to breach that
    plea agreement."    Cf. 
    Gall, 829 F.3d at 73
    (concluding that there
    was   no   breach   of     plea    agreement   where   prosecutor,   while
    acknowledging that guidelines calculations in PSR — which were
    different than parties' agreed-upon calculations — were correct,
    nonetheless recommended a sentence reflecting calculations in plea
    - 17 -
    agreement).7   Finally, when Ubiles protested, for the first time
    in the case, that the prosecutor was breaching the plea agreement,
    the prosecutor vigorously maintained (not once, but twice) that
    the government was standing by its recommendation of 300 months.
    In short, this case is very different from Gonczy.             The
    government stuck by its obligation under the plea agreement,
    recommending   the   300-month   sentence   that   it   was   entitled   to
    recommend under the agreement early, often, and throughout the
    sentencing in this case.      And it "never explicitly or implicitly
    sought" a sentence greater than 300 months.             
    Cruz-Vázquez, 841 F.3d at 549
    .
    Ubiles's    gripe   with   the    government's      decision    to
    emphasize certain factors at the sentencing hearing — Torres's
    status in the community, the impact the crime had on Torres's
    family, the nature of the crime, and Ubiles's actions immediately
    7 In a footnote in his opening brief, Ubiles asserts that "one
    must count on the good faith of the prosecution to perform with
    some degree of enthusiasm at the hearing." To the extent Ubiles
    intended for this sentence to argue that the government in this
    case breached the plea agreement because the prosecutor did not
    perform with sufficient enthusiasm, any such argument is both (1)
    not properly before us for lack of development, 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"), and (2) meritless, see
    
    Almonte-Nuñez, 771 F.3d at 91
    (explaining that prosecutor "was not
    required to be effusive in refusing to support the adjustment");
    
    Canada, 960 F.2d at 270
    ("[A] prosecutor normally need not present
    promised recommendations to the court with any particular degree
    of enthusiasm . . . .").
    - 18 -
    after    committing    the    murder    —    is    equally    unavailing.      The
    government properly discussed the actions Ubiles took immediately
    after the crime — going to the mall and having lunch — to rebut
    Ubiles's expression of remorse at the sentencing hearing; although
    the prosecutor "ha[d] no doubt the defendant is remorseful," he
    stated that it was "important" for the court to "consider his
    remorse on th[e] day" of the crime.                See 
    Almonte-Nuñez, 771 F.3d at 87
    , 90 (holding that government did not breach plea agreement
    where,     although    government       was       not     requesting    sentencing
    enhancement for restraining victim, rebutted defense counsel's
    assertion that discovery provided by government did not support
    restraint enhancement by arguing that "the victim impact statement
    furnished       a   factual     basis       for     the     two-level    restraint
    enhancement"; prosecutor's statement was "plainly made . . . to
    correct what the [prosecutor] reasonably viewed as a misstatement
    of fact by defense counsel"); see also 
    Delgado-Flores, 777 F.3d at 531
    (concluding that prosecutor did not breach plea agreement when
    he discussed evidence that rebutted defense counsel's effort to
    minimize defendant's role).
    Nor is the government's sentencing-hearing reference to
    the     other   factors      troubling.           "Having    unequivocally    [and
    repeatedly] stated that it was recommending a sentence" of 300
    months, "the government was free to offer reasons supporting its
    recommendation," and that's precisely what the government did
    - 19 -
    here.   
    Cruz-Vázquez, 841 F.3d at 549
    ; see also 
    Rivera-Rodríguez, 489 F.3d at 58
    .      Our decision in Almonte-Nuñez is illustrative.
    At the sentencing hearing in that case, the government: (1)
    characterized the robbery victim as "a defenseless female, 70 year
    old woman, attacked in a way that nobody should have to face . . .
    [w]hen she [was] sleeping, in a vulnerable state"; (2) referenced
    "the vicious way that [the defendant] committed the crime, when he
    assaulted [the victim] with no provocation"; and (3) chronicled
    the "severe bodily injury" that the victim suffered as a result of
    the 
    crime. 771 F.3d at 90
    .      Along the way, the prosecutor
    repeatedly affirmed that the government was "standing by the plea
    agreement."    
    Id. We rejected
    the defendant's contention that the
    government's sentencing argument amounted to a breach of the plea
    agreement:
    The Agreement allowed the prosecutor to seek the upper
    end of the GSR contemplated by the Agreement, and the
    [prosecutor] was within fair territory in emphasizing
    facts that made a sentence at the low end of that GSR
    inappropriate. The defendant admitted to committing a
    heinous crime resulting in horrific injuries, and
    nothing contained in the Agreement entitled him to have
    the government sugarcoat the facts.
    
    Id. at 91
    (citation omitted).
    So it is here.   The government did not breach the plea
    agreement by identifying evidence at the sentencing hearing that,
    - 20 -
    in   its     view,     supported   the    300-month   sentence     that   it   was
    requesting the district court to impose.8
    In a somewhat related vein, Ubiles next argues that the
    government breached the plea agreement by "advanc[ing] aggravating
    factors" in its sentencing memorandum.                In particular, Ubiles
    highlights the following factors identified in the memorandum: (1)
    statements contained in the PSR that Ubiles made to the probation
    officer about Ubiles's role as the "mastermind" of the offense;
    (2) statements not contained in the PSR or in the statement of
    facts accompanying the plea agreement that Negrón made to law-
    enforcement officers about what he and Ubiles did immediately after
    the crime; and (3) the prevalence of gun violence in Puerto Rico.
    Ubiles argues that these factors were not consistent with the
    section of the plea agreement in which the government reserved the
    right       "to    dispute   sentencing    factors    or   facts   material    to
    sentencing" because that provision of the agreement did not permit
    8
    Ubiles also appears to criticize the prosecutor for allowing
    Torres's family to speak. But the prosecutor did not breach the
    plea agreement by allowing Torres's family to address the court,
    something that he was legally required to do. See United States
    v. Aguirre-González, 
    597 F.3d 46
    , 51 (1st Cir. 2010) (explaining
    that the Crime Victims' Rights Act "enshrines a panoply of crime
    victims' 'rights,' including rights 'to be reasonably heard at any
    public proceeding in the district court involving . . .
    sentencing,'" "obligates district courts in criminal proceedings
    to 'ensure that the crime victim is afforded [such] rights' and
    requires government prosecutors to 'make their best efforts to see
    that crime victims are notified of, and accorded, the[ir] rights.'"
    (alteration in original) (quoting 18 U.S.C. § 3771(a)(4), (b)(1),
    (c)(1))).
    - 21 -
    the government "to bring any and all relevant facts or argument to
    the Court's attention at or before sentencing."                    Instead, Ubiles
    contends    that    these     aggravating       factors    were    "calculated     to
    inspire an emotional response for retribution" and "to urge an
    upward variance[] from established Guidelines levels."                      We reject
    this argument.
    For starters, Ubiles misapprehends the plea agreement.
    We   interpret     plea    agreements     "in    accordance       with   traditional
    principles of contract law."         
    Marín-Echeverri, 846 F.3d at 477-78
    (quoting United States v. Marchena-Silvestre, 
    846 F.3d 196
    , 202
    (1st Cir. 2015)).         Contrary to Ubiles's assertion, the unambiguous
    language    of   the      reservation-of-rights      paragraph         in   the   plea
    agreement does not prevent the government from bringing relevant
    facts to the district court's attention.                  Although one provision
    of this paragraph discusses the government's right "to bring its
    version of the facts of this case . . . to the attention of the
    probation office" (emphasis added), the other provisions of this
    paragraph are not so limited.               In particular, the government
    reserved, without qualification, its "right to carry out its
    responsibilities under guidelines sentencing" and its right "to
    dispute    sentencing      factors   or   facts     material      to     sentencing."
    Therefore, the plea agreement did not bar the government from
    bringing what it viewed as the relevant facts to the district
    court's attention in connection with its sentence recommendation.
    - 22 -
    This interpretation of the plea agreement recognizes that, "[b]y
    statute, '[n]o limitation shall be placed on the information
    concerning the background, character, and conduct of a person
    convicted of an offense which a court of the United States may
    receive and consider for the purpose of imposing an appropriate
    sentence.'"    
    Cruz-Vázquez, 841 F.3d at 549
    (quoting 18 U.S.C.
    § 3661); see 
    Almonte-Nuñez, 771 F.3d at 86
    ("We repeatedly have
    emphasized that prosecutors have a concurrent and equally solemn
    obligation to provide relevant information to the sentencing court
    and that a plea agreement may not abridge that obligation.").
    And there was nothing sinister about the government's
    decision to highlight certain facts and factors in its sentencing
    memorandum.9    As   was   true    at   the   sentencing   hearing,   the
    government's reference to these sentencing factors was firmly
    grounded in its recommendation that the court impose a 300-month
    sentence, and the government was permitted to marshal the facts
    and factors that, in its view, warranted the recommended sentence.
    See 
    Cruz-Vázquez, 841 F.3d at 549
    ; 
    Almonte-Nuñez, 771 F.3d at 91
    ;
    9 Ubiles asserts, in passing, that some of the facts contained
    in the government's sentencing memorandum were "not disclosed in
    the PSR and not part of the Statement of Facts" accompanying the
    plea agreement. However, apart from his meritless argument that
    the terms of the plea agreement prohibited the government from
    bringing these facts to the district court's attention, Ubiles
    makes no attempt to develop an argument that the government's
    reliance on facts not disclosed in the PSR was somehow improper.
    Therefore, we need not consider any such undeveloped argument.
    See 
    Zannino, 895 F.2d at 17
    .
    - 23 -
    
    Gonczy, 357 F.3d at 53
    ("The government's review of the facts of
    the case and of Gonczy's character cannot constitute a breach of
    the plea agreement as they were relevant to the court's imposition
    of the sentence; no limitation can be placed, by agreement or
    otherwise, on this information.").     Therefore, this aspect of the
    sentencing memorandum was fully consistent with both the terms of
    the plea agreement and the government's separate "duty to disclose
    information   material   to   the    district   court's   sentencing
    determinations."   
    Cruz-Vázquez, 841 F.3d at 548
    -49.
    Finally, Ubiles's reliance on the "no less than 300
    months" language of the government's sentencing memorandum cannot
    carry the day.10   Initially, we note that, although Ubiles now
    challenges this phrase as a breach of the plea agreement, he voiced
    no complaint relating to this phrase either at the sentencing
    hearing or in the almost one year that elapsed between the filing
    of the memorandum and the sentencing hearing.          Cf. Miranda-
    
    Martinez, 790 F.3d at 275
    (explaining that absence of objection
    from defense counsel "was not a mistake by counsel in the face of
    plain breach, but was instead a recognition by competent counsel
    10Throughout his opening and reply briefs, Ubiles insinuates
    that the prosecutor requested a sentence of "at least" 300 months.
    Ubiles has not pointed us to where in the record the prosecutor
    requested a sentence of "at least" 300 months, and our independent
    review of the record has revealed no support for that insinuation.
    - 24 -
    that the agreement was not being breached at all").11 Additionally,
    the phrase "not less than 300 months" is not literally inconsistent
    with the prosecution's plea-agreement obligation to recommend a
    sentence up to 300 months: Read literally, it suggests that
    anything less than 300 months — the sentence that the government
    twice        recommended     in     the     sentencing      memorandum     —    was    not
    appropriate.         Cf. 
    Almonte-Nuñez, 771 F.3d at 91
    (explaining, where
    plea agreement allowed government to seek sentence at high end of
    GSR, that prosecutor "was within fair territory in emphasizing
    facts        that    made   a     sentence     at    the    low   end    of    that    GSR
    inappropriate").            Finally,       even     if   this   isolated      phrase   was
    somewhat inartful, the government made crystal clear at sentencing
    that it was standing by the agreement and recommending a 300-month
    sentence; the government repeatedly reiterated this position, even
    when the district court suggested that the parties' agreement on
    a total offense level of 39 was not justified, see 
    Saxena, 229 F.3d at 7
    (explaining, in finding that government did not breach
    plea     agreement:          "Perhaps       most     important,    [the       prosecutor]
    resolutely          stood   by    the     bottom-line      recommendation       that   the
    government had committed to make . . . even after the court had
    11
    In making this observation, we by no means backtrack from
    our decision to assume, favorably to Ubiles, that all of his breach
    arguments have been preserved.    
    See supra
    Part A.1.     We simply
    juxtapose Ubiles's current claim that three words in the
    government's sentencing memorandum constitute a breach of the plea
    agreement with his continued silence on that point below.
    - 25 -
    indicated    that    it    would      not"    follow     the    parties'      sentencing
    recommendations), and the prosecutor vehemently denied defense
    counsel's    charge   that       the    government       was    breaching       the    plea
    agreement.     Viewing the totality of the circumstances, as we are
    required to do, see 
    Marín-Echeverri, 846 F.3d at 478
    , we do not
    perceive the government's use of this phrase to be a breach of the
    plea agreement.
    * * *
    In sum, the plea agreement permitted the government to
    recommend a 300-month sentence.                   The government did so, in both
    its sentencing memorandum and at the sentencing hearing, and it
    never wavered from that obligation, explicitly requesting a 300-
    month sentence eight times.               And, in recommending this sentence,
    the   government     was       entitled      to   explain      the   reasons     why   its
    recommended sentence was appropriate.                   In the end, the government
    never explicitly or implicitly sought a sentence higher than 300
    months.    Therefore, it did not breach the plea agreement.
    B.     The Sentence
    Ubiles next contends that the sentence imposed by the
    district     court        is     both        procedurally        and        substantively
    unreasonable.       We review the reasonableness of a sentence in a
    bifurcated     fashion,         first     assessing         claims     of     procedural
    unreasonableness      before          turning      to    plaints       of    substantive
    unreasonableness.         See Lasalle 
    González, 857 F.3d at 61
    ; United
    - 26 -
    States v. Arsenault, 
    833 F.3d 24
    , 28 (1st Cir. 2016).              Generally
    speaking,      we    "review   both     procedural      and      substantive
    reasonableness under a deferential abuse-of-discretion standard."
    
    Arsenault, 833 F.3d at 28
    .            In the procedural-reasonableness
    context, we apply the familiar abuse-of-discretion rubric in a
    "multifaceted"      manner:    "'we   afford   de    novo   review   to   the
    sentencing     court's    interpretation    and     application      of   the
    sentencing guidelines, assay the court's factfinding for clear
    error, and evaluate its judgment calls for abuse of discretion.'"
    
    Id. (quoting United
    States v. Ruiz-Huertas, 
    792 F.3d 223
    , 226 (1st
    Cir. 2015)).
    This   deferential   manner    of      reviewing    claims    of
    procedural reasonableness is altered, however, where the defendant
    fails to preserve the claim of error in the district court; in
    this circumstance, the daunting plain-error standard of review
    supplants the usual abuse-of-discretion rubric.12             See 
    Arsenault, 833 F.3d at 28
    ; 
    Vargas-García, 794 F.3d at 166
    .13                 With this
    12 To surmount the high plain-error hurdle, a defendant "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.'" Lasalle 
    González, 857 F.3d at 62
    (quoting United States v. Vargas-García, 
    794 F.3d 162
    , 166
    (1st Cir. 2015)).
    13 The consequence of a failure to lodge a substantive-
    reasonableness objection in the district court is less clear.
    "[T]he applicable standard of review for an unpreserved,
    substantive reasonableness challenge is 'murky.'" 
    Arsenault, 833 F.3d at 29
    (quoting United States v. Pérez, 
    819 F.3d 541
    , 547 (1st
    - 27 -
    framework    firmly    in   place,    we   turn   to   Ubiles's   sentencing
    arguments.
    1.    Procedural Reasonableness
    On the procedural-reasonableness front, Ubiles claims
    that the district court committed three procedural errors:              (1)
    improperly treating the guidelines as mandatory; (2) failing to
    comply with the requirement of 18 U.S.C. § 3553(c)(1) that the
    court explain its chosen sentence in open court; and (3) failing
    to adequately explain the reasoning behind its chosen sentence of
    365 months of imprisonment, especially given the fact that Negrón
    subsequently received a sentence of only 144 months.14            We address
    each claim of procedural error in turn.
    Cir. 2016)); see also 
    Ruiz-Huertas, 792 F.3d at 228
    (noting that
    it is unclear whether an unpreserved substantive reasonableness
    claim should be reviewed for abuse of discretion or plain error).
    In this case, both parties urge us to definitively decide the
    question of which standard of review applies, and, unsurprisingly,
    the parties stake out competing positions.        We decline this
    invitation, however. Because Ubiles's substantive-reasonableness
    challenge fails under the more defendant-friendly abuse-of-
    discretion rubric, we apply that standard, leaving for another day
    the task of definitively resolving this lingering question. See,
    e.g., 
    Arsenault, 833 F.3d at 29
    (steering this course).
    14 Ubiles appears to offer his second and third claims as
    distinct procedural errors, so we shall treat them separately.
    Additionally, the parties squabble over whether Ubiles's motion
    for reconsideration — filed the day after sentence was imposed —
    was sufficient to preserve these two claims of procedural error in
    the absence of an objection during the sentencing hearing. Because
    it makes no difference to the outcome, we assume, favorably to
    Ubiles, that he preserved these claims.      See United States v.
    Vazquez-Martinez, 
    812 F.3d 18
    , 25 (1st Cir. 2016) (employing this
    approach).
    - 28 -
    In his first claim of procedural error, Ubiles argues
    that the district court treated the guidelines as mandatory.                   See
    Gall v. United States, 
    552 U.S. 38
    , 51 (2007) (characterizing such
    an   error    as    procedural        error).    The     record       demonstrates
    definitively that no such error occurred.                 Before pronouncing
    sentence, the district court stated that it had "reviewed the
    applicable advisory guideline calculations."                  (Emphasis added.)
    See United States v. Ofray-Campos, 
    534 F.3d 1
    , 38 (1st Cir. 2008)
    (rejecting     claim    that     district   court   treated       guidelines    as
    mandatory where court stated that it was "using the guidelines as
    advisory"; "There is no doubt, therefore, that the district court
    imposed the sentence under the correct understanding that the
    sentencing guidelines are advisory, not mandatory").
    Entirely ignoring this passage of the sentencing-hearing
    transcript, Ubiles contends that the court's rejection of the
    parties' agreed-upon total offense level as without justification
    "betray[ed] continuing reflexive reliance upon pre-Booker law and
    practice common in the District of Puerto Rico."                  But, as Ubiles
    acknowledged       in   the    plea    agreement,   at    his     change-of-plea
    colloquy, and on appeal, the district court was not bound by the
    parties' agreement, and the mere fact that the court declined to
    follow the agreed-upon total offense level (and instead used the
    concededly     correct        total   offense   level    in     its     guidelines
    - 29 -
    calculations) does not erase the court's explicit acknowledgement
    of the advisory nature of the guidelines.
    Ubiles next argues that the district court did not comply
    with 18 U.S.C. § 3553(c)(1) because it failed to explain, in open
    court, the reasons for the sentence it imposed.      "A sentencing
    court must 'state in open court the reasons for its imposition of
    the particular sentence.'"      Lasalle 
    González, 857 F.3d at 62
    (quoting § 3553(c)). Section 3553(c) requires an in-court adequate
    explanation for the imposed sentence "to allow for meaningful
    appellate review and to promote the perception of fair sentencing."
    
    Vargas-García, 794 F.3d at 166
    (quoting 
    Gall, 552 U.S. at 50
    ).
    Contrary to Ubiles's claim, however, the district court
    did explain its reasons for the sentence in open court during the
    sentencing hearing.   The court's subsequent order denying Ubiles's
    motion for reconsideration — which Ubiles appears to view as the
    first articulation of the district court's reasons — largely
    repeats what the district court said at the sentencing hearing.
    The only arguably "new" reason offered in the order was the court's
    assessment of Ubiles's "shallow sincerity" when he apologized to
    Torres's family.15    Therefore, because the district court stated
    15A brief detour on the district court's "shallow sincerity"
    assessment:   In his opening brief, Ubiles, while acknowledging
    that this court is not in the business of second-guessing
    credibility assessments made by a sentencing judge, notes that the
    district court was not facing Ubiles when he spoke to the family
    and that the prosecutor, who evidently was facing him, expressed
    - 30 -
    its reasons in open court as required by § 3553(c), we reject
    Ubiles's argument to the contrary.
    The last arrow in Ubiles's procedural-error quiver is
    his contention that the district court's explanation for its 365-
    month sentence was inadequate.        According to Ubiles, the district
    court failed to consider all of the § 3553(a) factors.               Ubiles
    also thinks that the disparity between the 144-month sentence that
    Negrón received and the 365-month sentence imposed on Ubiles makes
    the district court's brief explanation of its reasons all the more
    suspect.
    Contrary to Ubiles's protestations, the district court's
    explanation easily passes muster.         A sentencing court "need not be
    'precise to the point of pedantry'" in its explanation; instead,
    the   "'court   need   only    identify   the   main   factors   behind   its
    decision.'"     Lasalle 
    González, 857 F.3d at 62
    -63 (quoting Vargas-
    
    García, 794 F.3d at 166
    ).         The court's explanation in this case
    meets this benchmark.         For starters, the court explicitly stated
    no doubt about the sincerity of Ubiles's remorse. He goes a step
    further in his reply brief, noting that this court can set aside
    a district court's credibility findings in some circumstances and
    arguing that, because Ubiles repeated his apology multiple times,
    "it has the ring of sincerity." But "[i]t is for the sentencing
    court to assess the credibility of [a] witness, and it is for the
    appellate court to defer to that assessment unless it is clearly
    erroneous." United States v. Ortiz-Torres, 
    449 F.3d 61
    , 78 (1st
    Cir. 2006).    Ubiles falls far short of establishing that the
    district court's assessment of his sincerity was clearly
    erroneous.   Thus, to the extent Ubiles means to challenge this
    credibility assessment, we are unmoved.
    - 31 -
    that it had "considered all sentencing factors in" § 3553(a), and
    "such a statement is entitled to some weight."                   
    Arsenault, 833 F.3d at 32
    (quoting 
    Ruiz-Huertas, 792 F.3d at 226-27
    ).                   And it
    expressly weighed several of these factors on the record at the
    sentencing hearing.
    The court considered the defendant's age, education and
    employment history, recent diagnosis of mental illness, lack of
    criminal record, and his two young daughters.                    See 18 U.S.C.
    § 3553(a)(1) (identifying as a sentencing factor "the history and
    characteristics of the defendant").             The district court also
    considered "the nature and circumstances of the offense," 
    id., in detail.
    In particular, the district court characterized the nature
    of the offense as "grave," and explained that the circumstances
    "reflect[ed] extreme cruelty on the part of the defendant Ubiles
    towards the victim."       Additionally, the court stressed the need
    "to effectively provide deterrence and to protect the public from
    further   crimes   by    this   defendant,    and   also    to    provide   just
    punishment."       See   
    id. § 3553(a)(2)(A)-(C)
         (specifying      these
    sentencing factors).16         Based on the court's balancing of these
    sentencing factors, the court stated that a 365-month sentence "is
    sufficient but not greater than necessary to meet [the] objectives
    16 In addition, the court explicitly considered the advisory
    GSR, see 18 U.S.C. § 3553(a)(4)(A), and the need for Ubiles to pay
    restitution to the Torres family, see 
    id. § 3553(a)(7).
    - 32 -
    of punishment and of deterrence in this case."   See 
    id. § 3553(a)
    ("The court shall impose a sentence sufficient, but not greater
    than necessary . . . .").
    Although "a district court is obliged to 'consider all
    relevant section 3553(a) factors, it need not do so mechanically,'"
    
    Ruiz-Huertas, 792 F.3d at 226
    (quoting United States v. Clogston,
    
    662 F.3d 588
    , 592 (1st Cir. 2011)), by, for example, "address[ing]
    those factors, one by one, in some sort of rote incantation when
    explicating its sentencing decision," 
    id. (quoting United
    States
    v. Dixon, 
    449 F.3d 194
    , 205 (1st Cir. 2006)).      Where, as here,
    "the record permits a reviewing court to identify both a discrete
    aspect of an offender's conduct and a connection between that
    behavior and the aims of sentencing, the sentence is sufficiently
    explained to pass muster under section 3553(c)."    
    Vargas-García, 794 F.3d at 166
    (quoting United States v. Fernández–Cabrera, 
    625 F.3d 48
    , 54 (1st Cir.2010)).17
    The discrepancy between Ubiles's 365-month sentence and
    Negrón's 144-month sentence does not alter this conclusion.18   As
    17 Ubiles also appears to attack the adequacy of the court's
    explanation by highlighting the lack of extended explanation for
    disregarding the parties' recommended total offense level and GSR.
    This argument is a nonstarter. "[A]lthough a district judge has
    a duty to adequately explain [her] choice of a particular sentence,
    '[she] has no corollary duty to explain why [she] eschewed other
    suggested sentences.'" 
    Arsenault, 833 F.3d at 32
    (quoting Ruiz–
    
    Huertas, 792 F.3d at 228
    ).
    18Although § 3553(a)(6) lists "the need to avoid unwarranted
    sentence disparities among defendants with similar records who
    - 33 -
    Ubiles    acknowledges   in   his   brief,   he   and   Negrón   are   hardly
    similarly situated.      Although both participated in the crime,
    Ubiles clearly took the laboring oar in this carjacking: he
    conceived the plan, enlisted Negrón to assist him, used his car to
    impede the path of travel of Torres's vehicle, forced Torres to
    the passenger seat, drove Torres's car to a secluded area, directed
    him at gunpoint to the edge of a cliff, and shot Torres in the
    head and killed him.      In short, given the different roles that
    Ubiles and Negrón played in this tragic saga, it was by no means
    unreasonable to sentence them differently.         Cf. 
    Arsenault, 833 F.2d at 33-34
    n.5 (rejecting sentencing-disparity challenge where
    defendant "proffer[ed] no evidence that the [other offenders]
    cited were in fact identically situated to him").19
    Discerning no procedural error, we now turn to Ubiles's
    claim that his sentence is not substantively reasonable.
    have been found guilty of similar conduct" as a sentencing factor
    that may be relevant, Ubiles clarifies in his reply brief that he
    is not making an argument about "unwarranted disparity."
    Therefore, we consider Ubiles's reference to Negrón's sentence to
    be a part of his larger argument that the district court failed to
    adequately explain the reasons for its chosen sentence.
    19We emphasize that this conclusion is dictated by our highly
    deferential standard of review and our sentence-disparity
    precedent. Even though there are significant differences between
    Ubiles and Negrón, they both actively participated in this crime,
    and we are somewhat baffled by the 221-month gulf between their
    respective sentences. Ultimately, however, because the district
    court adequately explained the sentence it imposed on Ubiles, we
    must reject Ubiles's argument about the adequacy of the
    explanation.
    - 34 -
    2.     Substantive Reasonableness
    Ubiles's substantive-reasonableness challenge — in which
    he argues that the district court abused its discretion by focusing
    only on the nature of the offense, the deterrent and punitive
    objectives of sentencing, and the maximum sentence suggested by
    the guidelines to the exclusion of factors favorable to Ubiles —
    fares no better.       Although he emphasizes the sentencing balance
    that the parties struck in the plea agreement, the district court
    was not bound by the parties' recommendations.        See 
    Gall, 829 F.3d at 75
    .     Instead, it was obligated to impose a sentence that was
    reasonable.
    Reasonableness in this context is not a static concept:
    "[i]n most cases, there is not a single appropriate sentence but,
    rather, a universe of reasonable sentences."           Lasalle 
    González, 857 F.3d at 63
    (alteration in original) (quoting United States v.
    Rivera-González, 
    776 F.3d 45
    , 52 (1st Cir. 2015)).            At bottom,
    "[a] sentence is substantively reasonable if the court gives a
    'plausible rationale' and reaches 'a defensible result.'"              
    Id. (quoting United
    States v. Díaz-Arroyo, 
    797 F.3d 125
    , 129 (1st Cir.
    2015)).    Both hallmarks of a substantively reasonable sentence are
    present in this case.
    First, the sentencing court's rationale was plausible.
    Although     Ubiles        characterizes   the   court's   reasoning    as
    "conclusory," this label is simply inapt.         As we explained above,
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    the   district       court's       reasoning     appropriately      stressed   the
    seriousness of Ubiles's crime and the need for the sentence imposed
    to provide just punishment, deterrence, and protection of the
    public.    See 
    Vargas-García, 794 F.3d at 167
    .             As he did before the
    district court, Ubiles stresses to us certain mitigating factors:
    the unlikelihood that he will recidivate, based on his age upon
    release; his employment history; and his relationships with his
    family and the community.           But "a sentencing court is entitled to
    conduct an appropriate triage and weigh some factors more heavily
    than others."    
    Id. That occurred
    in this case.
    Similarly,      the    district     court    reached   a   defensible
    result. The district court explicitly determined that its sentence
    satisfied the so-called "parsimony principle" — that a sentence be
    "'sufficient, but not greater than necessary' to achieve the
    legitimate     goals    of     sentencing."         
    Id. (quoting 18
      U.S.C.
    § 3553(a)).     And, given the heinous nature of this crime and the
    statutory maximum penalty of life imprisonment, it was reasonable
    for the district court to determine that a 365-month sentence was
    appropriate.
    THE END
    For these reasons, we conclude that the government did
    not breach the plea agreement and that the sentence imposed by the
    district     court     was     neither    procedurally       nor    substantively
    unreasonable.    Therefore, we affirm the judgment below.
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