United States v. Velazquez-Aponte ( 2019 )


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  •           United States Court of Appeals
    For the First Circuit
    Nos. 17-1965
    17-1966
    UNITED STATES OF AMERICA,
    Appellee,
    v.
    CARMELO ESTEBAN VELÁZQUEZ-APONTE,
    Defendant, Appellant.
    APPEALS FROM THE UNITED STATES DISTRICT COURT
    FOR THE DISTRICT OF PUERTO RICO
    [Hon. Juan M. Pérez-Giménez, U.S. District Judge]
    Before
    Torruella, Lipez, and Thompson,
    Circuit Judges.
    Laura Maldonado-Rodríguez, for appellant.
    Julia M. Meconiates, Assistant United States Attorney, with
    whom Rosa Emilia Rodríguez-Vélez, United States Attorney, and
    Mariana E. Bauzá-Almonte, Assistant United States Attorney, Chief,
    Appellate Division, were on brief, for appellee.
    October 11, 2019
    TORRUELLA, Circuit Judge.           In June 2011, Defendant-
    Appellant Carmelo E. Velázquez-Aponte ("Velázquez") went on a
    three-day    carjacking    spree.        After   six   years      of    litigation,
    Velázquez was ultimately convicted of eleven offenses arising from
    the spree, including four counts of carjacking -- one of which
    resulted in the death of a person -- four counts of possessing a
    firearm    in   furtherance    of   those      carjackings,       two    counts    of
    possessing a stolen firearm, and one count of possessing a firearm
    as a convicted felon.         Velázquez now appeals his convictions on
    various grounds.       After careful review, we affirm.
    I.   Background1
    A.   Factual Background
    1.    First Carjacking: Mieses's Ford Pickup Truck
    On June 18, 2011, Velázquez shot and killed Richardson
    Mieses-Pimentel     ("Mieses")      at    a    Shell   Gas     Station     in     the
    municipality of Carolina, Puerto Rico, after which he took Mieses's
    gun and fled in Mieses's black Ford Explorer pickup truck.                        The
    next day, Officer Cynthia Rodríguez-Birriel ("Officer Rodríguez")
    went to the scene and viewed the gas station's security footage.
    Officer    Rodríguez    recognized       the   assailant     in   the     video    as
    1  We summarize the relevant facts, reserving for our analysis a
    more detailed discussion of the facts relevant to each issue
    presented on appeal.
    -2-
    Velázquez, whom she knew because she had previously investigated
    him regarding state criminal charges.
    2.    Second Carjacking: Collazo's Mitsubishi Outlander
    On June 19, 2011, while officers were investigating the
    first carjacking, Velázquez arrived at another Shell Gas Station,
    this time in the area of Villa Prades in the municipality of San
    Juan.        There, he spotted Jan Carlos Collazo ("Collazo") in the
    driver's seat of a "wine-colored Outlander" SUV while a friend was
    outside drying off the SUV's exterior.2         Velázquez approached the
    vehicle and placed a black pistol on the back of Collazo's head
    while ordering him to step out.           After taking Collazo's Samsung
    cellphone, Velázquez ordered Collazo to get back in and start the
    car.    During this exchange, another friend of Collazo's, Zaimarie
    Font-Zayas ("Font"), approached the SUV unaware of the situation.
    After Collazo successfully started the car, Velázquez ordered him
    to get out once again.      Before leaving the station with Collazo's
    vehicle and cellphone, Velázquez pointed his gun at Font and
    threatened to kill her if she said anything.
    3.    Shootout with Officers Rivera and León
    The following day, June 20, 2011, Officer Daniel Joel
    Rivera-Martínez ("Officer Rivera") was patrolling the area of the
    2  Witnesses used "wine-colored," "burgundy," and "red" to refer
    to the same stolen Mitsubishi Outlander.
    -3-
    Plaza Carolina shopping mall when a man told him that his nephew's
    "red Outlander" had been stolen.           Officer Rivera misunderstood
    that the man's nephew had taken off with the Outlander.                 In a
    bizarre coincidence, an Outlander of that color drove by the two
    men seconds later, prompting Officer Rivera to signal the vehicle
    to stop.       Believing he was about to encounter the man's nephew,
    Officer Rivera exited his patrol car and, while pointing his
    service firearm, instructed the Outlander's driver to get out of
    the vehicle.       It turned out it was Velázquez driving Collazo's
    vehicle.       From the driver's seat, Velázquez stuck his right arm
    out of the SUV and shot at Officer Rivera.            Velázquez then exited
    the vehicle and, while shooting, ran towards Officer Rivera, who
    returned fire before losing consciousness due to bullet wounds.
    Once Officer Rivera regained consciousness, he noticed that his
    service revolver was missing.
    After hearing over the radio that a fellow officer had
    been injured at the Plaza Carolina shopping mall, Officer Edwin
    León-Jiménez ("Officer León") saw a Mitsubishi Outlander matching
    the description of the suspect vehicle announced over the radio
    pass him by, heading in the opposite direction.           Officer León, who
    was   on   a    motorcycle,   followed    Velázquez    into   a   residential
    development where Velázquez stopped the SUV and began shooting at
    -4-
    him.    Officer León returned fire while he took cover behind his
    motorcycle.
    4.   Third Carjacking: Officer Fargas's Patrol Car
    Officer Edgardo Fargas-Pérez ("Officer Fargas") arrived
    as backup in his patrol car, within which he had a navy-blue cap
    that said "POLICIA."      As both officers took cover behind the patrol
    car, they noticed children playing outside in a nearby summer camp.
    The officers retreated from the patrol car and sought cover behind
    a truck to avoid Velázquez, who was walking toward them and
    shooting "without any care for [their] life or for his."         Suddenly,
    the shots stopped and Officer Fargas saw Velázquez board the patrol
    car and flee the scene.
    5.   Fourth Carjacking: Gómez's White SUV
    Velázquez then drove to a nearby Total Gas Station in
    Carolina where Johnny Gómez-Castro ("Gómez") was fixing the tire
    of   his    daughter's   SUV,   a   white   Mercury   Mountaineer.   Gómez
    testified that while he was opening the door to the SUV, a man
    ordered him to hand over the keys.            Simultaneously, Gómez felt
    something "like metal" pressed against his left side.          After that,
    Gómez heard the man say "[h]urry up, because I just injured a
    police officer."     The man then took the car keys, ripped a gold
    chain bearing a cross pendant from Gómez's neck, and drove away in
    the Mountaineer.
    -5-
    6.   Velázquez's Arrest
    Responding to radio reports, Officer Joel Caldero-Ríos
    ("Officer Caldero") saw a Mercury Mountaineer and followed it on
    his motorcycle into a residential area.     Cornered, on a dead-end
    street, Velázquez exited the vehicle with two firearms and began
    shooting at Officer Caldero, who returned fire but lost sight of
    Velázquez.    Arriving soon afterwards, Officer Maribel Medina-Matos
    pursued Velázquez on foot and ultimately arrested him with the
    help of other officers.      Officers recovered Collazo's cellphone
    from Velázquez's bag, along with Mieses's gun and Officer Rivera's
    firearm from Velázquez's person.    Inside the Mercury Mountaineer,
    they found Officer Fargas's cap with the word "POLICIA" written on
    it and a gold chain.
    B.   Procedural Background
    1.   Indictment
    On July 6, 2011, a grand jury indicted Velázquez with
    eleven counts related to the crime spree.3    Although the case was
    3  Count 1 charged Velázquez with a carjacking that resulted in
    the death of a person, in violation of 
    18 U.S.C. § 2119
    (3). Counts
    3, 5, and 7 charged Velázquez with carjacking in violation of 
    18 U.S.C. § 2119
    .    Count 2 charged Velázquez with possessing and
    using a firearm in furtherance of the carjacking set forth in Count
    1 of the Indictment, and in the process causing the death by murder
    of a person with the firearm in violation of 
    18 U.S.C. § 924
    (c)
    and 924(j)(1). Counts 4, 6, and 8 charged Velázquez with possession
    of a firearm in furtherance of the carjackings set forth in Counts
    3, 5, and 7, respectively, in violation of 
    18 U.S.C. § 924
    (c).
    Count 9 charged Velázquez with being a felon in possession of a
    -6-
    death penalty eligible, on April 24, 2014, the government informed
    the court that it would not seek the death penalty.4
    On December 9, 2014, defense counsel asked the court to
    transfer Velázquez to the Federal Medical Center ("FMC") in Butner,
    North Carolina, for a competency evaluation.                 The next day, the
    district   court      granted    the    request      and   ordered     Velázquez's
    transfer for a forensic psychiatric or psychological examination
    to determine his competency to stand trial.5
    2.    Forensic Mental Health Evaluation Report
    On   November       20,    2015,   the    Warden      of   FMC   Devens
    transmitted to the district court a comprehensive Forensic Mental
    Health Evaluation Report rendered by a board-certified forensic
    psychologist     of   that   institution,      finding     that    Velázquez   was
    competent to stand trial and sane at the time of the offenses
    ("Forensic Report").6        The Forensic Report described Velázquez's
    firearm in violation of 
    18 U.S.C. § 922
    (g)(1) and § 924(a)(2).
    Finally, Counts 10 and 11 charged Velázquez with possession of a
    stolen firearm in violation of 
    18 U.S.C. § 922
    (j) and § 924(a)(2).
    4  On February 18, 2014, the court had "expressed its concerns
    regarding the extensive length of time that the DOJ ha[d] taken"
    in determining whether to seek the death penalty.
    5  The evaluation was ultimately conducted at the Federal Medical
    Center Devens ("FMC Devens") in Ayer, Massachusetts.
    6  The Forensic Report, dated November 9, 2015, actually consisted
    of two parts, the first addressing Velázquez's competency to stand
    trial, and the second, captioned "Forensic Report Addendum,"
    -7-
    complex mental health history.        According to the Forensic Report,
    the first available record of Velázquez's mental health problems
    consisted of a note from his "primary care physician at Clínica
    Borinquen in August 2007, indicating 'anxiety disorder' and a
    prescription     for      the     anxiolytic/benzodiazepine          medication
    alprazolam."
    The Forensic Report further documented that while under
    the custody of the Puerto Rico Department of Corrections for an
    unrelated weapons offense, from March 2008 until his release in
    June 2011, Velázquez was intermittently prescribed a variety of
    drugs: Alprazolam (anxiety), Zyprexa (antipsychotic), Depakote
    (mood     stabilizer),      Paxil         (antidepressant),     and      Elavil
    (antidepressant).        During    this    time,   Velázquez   was    initially
    diagnosed only with Antisocial Personality Disorder.                  After he
    described his history of psychiatric treatment, a diagnosis of
    schizophrenia was added.
    The Forensic Report next recounted that once in federal
    custody and prior to his competency evaluation,7 Velázquez injured
    himself    on   several     occasions       and    was   prescribed    various
    opining on the defendant's sanity at the time of the offenses.
    7  According to the Forensic Report, Velázquez was released from
    the Bayamón Correctional Institution for "Weapons Law Violations"
    on June 14, 2011 and arrested for the federal offenses related to
    this appeal on June 20, 2011.
    -8-
    medications based on his requests and self-reported symptoms,
    including      Prozac    (antidepressant),            Zyprexa   (antipsychotic),
    Risperdal      (antipsychotic),        Seroquel       (antipsychotic),     Klonopin
    (anxiety), Remeron (antidepressant), Wellbutrin (antidepressant),
    and   Buspar    (anxiety).        At   the     time   the   report   was   written,
    November 9, 2015, Velázquez had been prescribed and was taking
    Wellbutrin, Buspar, Klonopin, Seroquel, and Remeron.
    The Forensic Report stressed that Velázquez's "mental
    health history [was] primarily based on his own self-report, as
    opposed to actual clinical observation of serious mental health
    symptoms."       As an example, it noted that Velázquez's initial
    schizophrenia diagnosis in 2008 was "[b]ased only on [Velázquez's]
    self-report."        The Forensic Report further noted that over time,
    Velázquez had described "a more severe history of mental health
    problems       and    treatment        than     is     clinically    documented."
    Additionally, it observed that Velázquez's reported mental health
    history "ha[d] often been inconsistent," and that Velázquez "ha[d]
    reported a number of atypical and unusual symptoms which are rare
    among genuinely mentally ill individuals."
    The Forensic Report concluded that Velázquez "d[id] not
    meet [the] criteria for Schizophrenia or any other Psychotic
    Disorder."      It determined that Velázquez did have a longstanding
    -9-
    personality disorder,8 identifying it as Antisocial Personality
    Disorder with Borderline Features ("APD").                 According to the
    Forensic Report, the "essential feature of [APD] is a pervasive
    pattern of disregard for and violation of the rights of others
    occurring since age 15."
    As   to   Velázquez's     competency     to   stand     trial,    the
    Forensic Report concluded that Velázquez did not "suffer from a
    mental illness which would render him mentally incompetent to the
    extent he is unable to understand the nature and consequences of
    the proceedings against him or to assist properly in his defense."
    The Forensic Report acknowledged that Velázquez could be "very
    difficult    to   work   with,"   or   could   "refuse     to   work    with   his
    attorney"    altogether,    but   stressed     that    "this    is     volitional
    behavior which is not motivated by a mental illness.               The defendant
    is capable of working with his attorney and assisting in his
    defense if he chooses to do so."
    3.     Evidentiary Hearing
    On April 18, 2016, the district court held an evidentiary
    hearing.      The court interacted with Velázquez throughout the
    hearing and described him as "very articulate, very cool, very
    8  According to the Forensic Report, "[a] personality disorder is
    an enduring pattern of experience and behavior that is pervasive
    and inflexible and leads to distress or impairment."
    -10-
    reflective, with excellent language and excellent expression."
    After considering Velázquez's demeanor and noting that the medical
    evaluations     and     forensic    reports     "clearly     indicate   that
    [Velázquez] has a capacity to both understand the trial and aid
    [his attorney] in understanding, in helping [Velázquez] to defend
    himself," the district court ruled that the case would proceed to
    trial.
    During the afternoon session of the evidentiary hearing,
    Velázquez's counsel expressed concern that Velázquez had not been
    receiving certain medications since his return to Puerto Rico from
    the mainland and that the dosage of one of his medications had
    been    substantially      decreased.      Moreover,   Velázquez's   counsel
    explained that working with Velázquez was not easy, as he was at
    times uncooperative.        Thus, he reiterated a request that a second
    attorney be appointed to assist in Velázquez's defense, which the
    district court granted.
    The next day, the district court issued an order to show
    cause to the warden of the Metropolitan Detention Center ("MDC")
    Guaynabo (the "Warden") as to why Velázquez "had not been receiving
    the     medications   or     appropriate    dosage     of   the   medications
    prescribed."9    The issue of Velázquez's medication did not arise
    again until months later, on the eve of trial.
    9     The record on appeal is silent as to any response from MDC
    -11-
    4.     Severance of Count 9
    At the request of the defense, the court severed Count
    9, which charged Velázquez with being a felon in possession of a
    firearm.       Thus, the case first proceeded to trial as to Counts 1-
    8, and 10-11.
    5.     Velázquez's Medication and Mental State During the First
    Trial
    The topic of Velázquez's medication arose frequently
    during Velázquez's first trial.            On June 27, 2016, the day before
    opening statements, defense counsel stated that Velázquez had
    informed him that he was not being provided his medications.                 The
    district court indicated that it would once again speak to the
    Warden.     It acknowledged that it believed Velázquez's treatment
    was "apparently working" and that "[t]hose pills are winners.                And
    I wouldn't want to take the winners out of the scheme until the
    trial is over."
    On the first day of trial, June 28, 2016, the court
    placed    on    the   record   its   conversation   with    the    Warden.    It
    explained      that   the   Warden   had    informed   it   that    Velázquez's
    medication dosage would not be decreased, and that "on advice" of
    Velázquez's psychiatrist in Florida, "the levels of the medicine
    Guaynabo and as to how this was resolved.
    -12-
    will   be    --    as    to    the    principal      medicine   .   .    .   the   levels
    [administered] on Friday."
    On day three of trial, June 30, 2016, defense counsel
    advised the court that Velázquez again complained he was not
    receiving the proper "dosage of the drug."                   In response, the court
    stated it would contact the Warden and request that Velázquez's
    doctor      appear      at    court    with    Velázquez's      medical      record   the
    following morning.              The court sought Velázquez's permission to
    "talk to the doctor as to the exact medicines that [were] being
    provided to him."             The defendant responded "Yes, you may. You can
    speak to the doctor."
    The following morning, Dr. López -- the Medical Director
    of MDC Guaynabo -- met with the court, counsels of record, and the
    defendant.        She reported, as the district court characterized it,
    that "all the medicines, including the medicines that [Velázquez]
    alleged he hasn't been receiving, he is receiving."                      On the record,
    Velázquez's        counsel        acknowledged        that   this       statement     was
    consistent with what Dr. López had said in the meeting, and did
    not challenge the statement.                  He added for the record that Dr.
    López had met with the defendant, alone, to discuss his treatment,
    and that because "trial, by definition, creates anxiety," Dr. López
    had    indicated        she    would   increase       Velázquez's       medication    for
    anxiety.
    -13-
    Dr. López also took the stand and reiterated under oath
    that Velázquez was regularly receiving all of his medications.
    When asked to specify the medications, she indicated that the
    defendant was at the moment prescribed Venlafaxine (Effexor),
    Bupropion (Wellbutrin), and Clonazepam (Klonopin).10           Dr. López
    explained    that   Velázquez   was    goal-oriented,   organized   in   his
    thoughts, clear, and "most certainly d[id] understand what [was]
    going on."    She also said that "in his goal-seeking . . . this is
    the type that always wants more and more and more.          He will never
    be satisfied, and the object is control."
    The parties discussed Velázquez's medications again on
    July 8, 2016, as Velázquez had apparently refused to take them.
    The court opened the record that day inquiring whether Velázquez
    was willing to take his medications.          According to his counsel,
    Velázquez was participating in his defense, but was "not satisfied
    with the way that the medicines are being handled because he [was]
    used to . . . more medication."         Nevertheless, the court arranged
    for the medication to be brought from MDC, and Velázquez took his
    medication later that day during a recess.         The judge noted that
    10  There is no information in the record as to who prescribed
    those medications to Velázquez, or why three of those medications
    are different from the five medications -- Wellbutrin, Buspar,
    Klonopin, Seroquel, and Remeron -- he was prescribed at the time
    the Forensic Report was completed on November 9, 2015. The two
    medications that remained the same were Wellbutrin and Klonopin.
    -14-
    Velázquez "looked very calm to me.           I appreciate his conduct.      He
    seemed very cooperative with the Court."
    6.     First Trial Verdict
    Once the government rested its case, Velázquez's counsel
    moved for a judgment of acquittal under Fed. R. Crim. P. 29
    regarding "the events of the Mountaineer" (Counts 7 and 8).                The
    court reserved judgment.
    Next, Velázquez's counsel informed the court that the
    defense would not present evidence.           As a result, the court advised
    Velázquez that he had a right to present witnesses and also to not
    take the stand, to which Velázquez responded that he understood.
    When the court asked Velázquez whether it was his decision to not
    present witnesses, however, he responded "I don't know what to
    answer."     Trying to explain, the court asked Velázquez whether he
    had heard the court state at the beginning of trial that he is
    presumed innocent, to which Velázquez initially responded, "No,"
    and   then    said,   "Well,   I   remember    when   you   told   the   jury."
    Afterwards, Velázquez said that he had asked his attorney to
    present an argument and that his counsel had responded that what
    he requested "was not evidence.             It was argumentation."       After
    Velázquez conferred with his attorneys, they informed the court
    that Velázquez would not take the stand or call any witnesses.
    Velázquez agreed.
    -15-
    Velázquez's     counsel    also     informed   the   court    that
    Velázquez was requesting to meet with him for two days before
    closing arguments, a request which the court partially granted.
    Eventually, the jury found Velázquez guilty as to all
    counts.
    7.    Second Trial
    The second trial concerned solely Count 9 for being a
    felon in possession of a firearm.            Prior to commencing the second
    trial, the court held another hearing to discuss Velázquez's
    competency.      Based on Velázquez's demeanor and interactions during
    the hearing, the court found Velázquez to be competent and alert,
    without any observed mental health problems that would prevent him
    from continuing to trial.       In the end, the jury found Velázquez
    guilty.
    II.   Discussion
    On    appeal,   Velázquez        asserts   challenges    to    the
    proceedings during both his first and second trials.                As to the
    first trial, Velázquez contends that 1) he was deprived of a fair
    trial because the trial court failed to sua sponte question the
    effects of medication on his competence; 2) the admission of
    certain DNA evidence violated the Confrontation Clause; and 3) the
    government failed to present sufficient evidence to prove Counts 7
    and 8.    As to the second trial, Velázquez claims that the district
    -16-
    court 1) failed to caution the jury against premature deliberations
    and 2) violated his rights under the Confrontation Clause by
    allowing Officer Rodríguez's testimony.
    A.   Velázquez's Competency During the First Trial
    Velázquez first argues that he is entitled to a new trial
    because the district court failed to question the effects of the
    psychiatric medications that he was taking on his competence during
    trial.    Although Velázquez concedes that his "mental health,
    medication,   evaluation   and   treatment   were   amply   discussed
    throughout the six years of litigation," he claims that the
    district court did not continually monitor the "fluctuations" in
    his medications or the potential effects of the drug combinations.
    He notes that the medications given to him during trial differed
    from the medication prescribed while he was at FMC Devens.
    Velázquez further contends that "[o]ther than being calm
    and well behaved, there are no other indications in the record
    that the fluctuations in medication were monitored by the district
    court."   He suggests that "[p]erhaps [his] insistence in meeting
    with his lawyers for two days prior to the closing arguments" is
    evidence of his "misunderstanding [of] the proceedings."
    Velázquez acknowledges that we review this unpreserved
    claim for plain error.     See United States v. Llanos-Falero, 
    847 F.3d 29
    , 33-34 (1st Cir. 2017) (reviewing unpreserved claim that
    -17-
    district court failed to sufficiently inquire about medications
    during a change-of-plea hearing under the plain error standard).
    Under plain error review, the appellant bears the burden of showing
    "(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. Montañez-
    Quiñones, 
    911 F.3d 59
    , 63-64 (1st Cir. 2018) (quoting United States
    v. Duarte, 
    246 F.3d 56
    , 60 (1st Cir. 2001)).      "This standard of
    review places a heavy burden on the defendant and 'tends to afford
    relief . . . only for "blockbuster" errors.'"      United States v.
    Acevedo-Hernández, 
    898 F.3d 150
    , 167 (1st Cir. 2018) (quoting
    United States v. Moran, 
    393 F.3d 1
    , 13 (1st Cir. 2004)).
    The government first argues that Velázquez waived this
    argument on appeal, as he did not develop it past a skeletal sketch
    and failed to argue the last two prongs of the plain error test.
    In the alternative, the government argues that the district court
    did not err, much less plainly err.    It asserts that Velázquez did
    not provide any case law supporting the proposition that the
    district court had to further inquire, sua sponte, about the
    effects of Velázquez's medications during trial.       Moreover, it
    stresses that the district court took "great pains" to ensure
    Velázquez received the proper treatment and was competent to stand
    -18-
    trial,     highlighting    the      different    instances     throughout     the
    litigation when the court inquired and/or received information
    regarding    Velázquez's    mental     state.     Finally,      the   government
    stresses    that    Velázquez's     behavior    during    trial   supports    the
    conclusion that he was competent, and that in any case, the
    district court's appraisal of a defendant's demeanor should be
    afforded deference.
    It is well settled that the conviction of a person who
    is   legally   incompetent     to    stand    trial   violates    due   process.
    United States v. Brown, 
    669 F.3d 10
    , 17 (1st Cir. 2012); see Pate
    v. Robinson, 
    383 U.S. 375
    , 378 (1966).             "The test for competency
    [to stand trial] is whether the defendant first has sufficient
    present ability to consult with counsel with a reasonable degree
    of rational understanding, and second [whether he] has a rational
    and factual understanding of the proceedings against him."               Brown,
    
    669 F.3d at 17
    ; see United States v. Ahrendt, 
    560 F.3d 69
    , 74 (1st
    Cir. 2009) (citing Dusky v. United States, 
    362 U.S. 402
    , 402
    (1960)).     "The 'understanding' required is of the essentials --
    for example, the charges, basic procedure, possible defenses --
    but not of legal sophistication."             Robidoux v. O'Brien, 
    643 F.3d 334
    , 339 (1st Cir. 2011).
    After    careful     consideration    of     the   record   and   the
    arguments, we find that Velázquez's claim fails.               Velázquez argues
    -19-
    in general terms that the court failed to appreciate or monitor
    the way in which his prescription drugs affected him throughout
    the trial.       However, except for one instance in which he claims
    he was confused and which we will discuss further below, he does
    not specify any behavior that should have prompted the judge's
    concern, or explain why the court's inaction constituted plain
    error.      Thus,      his   "failure     to   elaborate   clearly    how   [the]
    purported lapse[s] by the district court meet[] the four-part test
    for plain error risks waiver."            Llanos-Falero, 847 F.3d at 35.
    Regardless, even if not waived, and even if the court
    had erred -- issues we are not deciding -- Velázquez failed to
    show that any error was clear or obvious, and thus we need not
    reach the remaining two plain-error prongs.
    Indeed, contrary to Velázquez's allegations, the court
    took measures to assess his competence and to ensure he received
    proper treatment.            First, the court requested and received a
    mental     competency        evaluation    that    concluded   Velázquez        was
    competent to stand trial and capable of working with his attorney
    and assisting in his defense if he chose to do so.                   Second, the
    court held an evidentiary hearing prior to trial to discuss the
    findings    of   the    competency      report,   during   which     it   had   the
    opportunity      to    interact    with    the    defendant,   and    ultimately
    concluded that Velázquez had the capacity to understand the trial
    -20-
    and aid his attorneys in his defense.        Moreover, throughout trial,
    the   court    was   attentive   to   Velázquez's   demeanor   and   to   his
    complaints that he was not receiving proper medication.                    On
    several occasions, both before and during trial, the court inquired
    with the Warden and/or MDC Guaynabo's Medical Director about
    Velázquez's medications, and each time, they confirmed that he was
    receiving appropriate doses.11        Moreover, Dr. López, MDC Guaynabo's
    Medical Director, spoke with Velázquez outside the presence of the
    judge and later testified that Velázquez was "very goal-oriented,"
    "organized in thoughts," and "clear."          Upon the district judge's
    inquiries regarding whether Velázquez understood "what's going on
    here," Dr. López responded: "He most certainly does understand
    what's going on.      And, as I said, he's goal-oriented."12
    Most importantly, Velázquez has not pointed to anything
    11  As to Velázquez's earlier complaints during the evidentiary
    hearing held months before trial that he was not receiving adequate
    doses of the medications, the district court issued an order to
    show cause to the Warden of MDC Guaynabo, but the record is silent
    as to any response.
    12 Dr. López explained that "goal-oriented" meant that Velázquez
    sought control. She stated:
    [P]art of the personality traits here are wanting to
    control small things, such as, for example, where do
    I sit? It's also going to escalate. You can anticipate
    that in his goal-seeking, he's -- this is the type
    that always wants more and more and more. He will
    never be satisfied, and the object is control.
    -21-
    in the record that suggests reasonable cause to believe that he
    was incompetent during trial.                 Here, the district court had
    opinions    from    two    medical     professionals      to   the    effect   that
    Velázquez was competent, one rendered prior to trial (Forensic
    Report),    and    the     other    during     trial    (MDC   Guaynabo    Medical
    Director's testimony).            See Ahrendt, 560 F.3d at 75 (noting that
    a qualified mental health professional's report is an important
    factor     for    the     trial    court     to   consider     when   determining
    competency).       Moreover, the district court had the benefit of
    perceiving       Velázquez's       demeanor       and   behavior      during    the
    evidentiary hearing and a 13-day trial.13                 See United States v.
    Rodríguez-León, 
    402 F.3d 17
    , 25 n.8 (1st Cir. 2005) (refusing to
    "second guess" the district court's determinations as it had "the
    benefit     of     directly        perceiving      [defendant's]      demeanor").
    Additionally,      Velázquez's       lucid   responses    to   the    court, 14 his
    13 At the evidentiary hearing, the court noted that Velázquez was
    "very articulate, very cool, very reflective, with excellent
    language and excellent expression." On the eighth day of trial,
    the court observed that Velázquez "seemed very cooperative with
    the court."     Even when the court was not describing its
    observations of Velázquez for the record, that does not mean it
    was not assessing his demeanor and behavior.      See Sturgis v.
    Goldsmith, 
    796 F.2d 1103
    , 1109 (9th Cir. 1986)(explaining that a
    "defendant's demeanor and behavior in the courtroom can often be
    as probative on the issue of his competence as the testimony of
    expert witnesses").
    14 For example, on June 27, 2016, the day before trial commenced,
    when asked about a hypothetical plea offer, Velázquez responded "I
    want to go to trial." On June 30, 2016, when the court requested
    -22-
    counsel's acknowledgement on July 8, 2016 that he was participating
    in his defense,15 and even his own monitoring of his medication
    regimen,   all   suggest   that   he   was   competent   even   if   he   was
    medicated.
    The only instance that Velázquez points to in support of
    his claim of incompetence occurred at the close of the government's
    case in chief.     Velázquez asserts that he was confused when the
    court inquired whether he agreed with his counsel's statement that
    the defense would not present evidence, and that "[p]erhaps, [his]
    insistence in meeting with his lawyers for two days prior to the
    closing arguments was the result of his misunderstanding the
    proceedings."     As mentioned earlier, however, the defendant need
    not have a legally sophisticated understanding of the proceedings,
    and an initial confusion as to the difference between argumentation
    and evidence, coupled with a request to meet for two days prior to
    closing arguments, does not show that Velázquez lacked a reasonable
    degree of rational understanding of the proceedings or that he was
    that Velázquez allow it to speak with his doctors, Velázquez
    responded, "Yes, you may. You can speak to the doctor." At the
    close of the government's case, when the court asked him whether
    he remembered when it discussed his presumption of innocence, he
    responded, "Well, I remember when you told the jury."
    15 On July 8, 2016, the eighth day of trial, Velázquez's attorney
    noted that Velázquez had "been participating in the trial well
    with [him]."
    -23-
    unable to assist in his defense.         See Robidoux, 
    643 F.3d at 339
    .
    To the contrary, it shows that Velázquez was an engaged and active
    participant.     Furthermore, Velázquez has not pointed to anything
    in the record that backs his assertion that he could have been
    drowsy or dizzy to the point of incomprehension.
    With this background, Velázquez's general assertion that
    the   district   court's   inquiries    regarding    the    effect    of   his
    medication were insufficient, without even the slightest factual
    support for the proposition that Velázquez was incompetent during
    trial, is far from sufficient to establish clear error.16
    B.    DNA Evidence
    Velázquez   next   argues   that   forensic     expert    Joselyn
    Carlson's    ("Carlson")   testimony     regarding    the    DNA     evidence
    presented at trial violated his rights under the Confrontation
    16 The cases Velázquez cites are distinguishable and he makes no
    effort to explain why, considering the distinct facts of this case,
    they support his contention that it was clearly erroneous for the
    district court to have proceeded without further discussing the
    effects of his medication. Both Sell v. United States, 
    539 U.S. 166
     (2003), and Riggins v. Nevada, 
    504 U.S. 127
     (1992), involved
    the forced administration of drugs to a defendant, and United
    States v. Parra-Ibañez, 
    936 F.2d 588
     (1st Cir. 1991), concerned a
    Rule 11 guilty plea hearing, during which the court had much less
    time to interact with the defendant than a full-throttle trial and
    the defendant was "simultaneously waiv[ing] several constitutional
    rights, including his privilege against compulsory self-
    incrimination, his right to trial by jury, and his right to
    confront his accusers," 
    id. at 595
     (quoting McCarthy v. United
    States, 
    394 U.S. 459
    , 466-67 (1969)).
    -24-
    Clause, as Carlson did not personally test any of the DNA samples
    on which her testimony was based. 17            Velázquez stresses that
    Carlson was asked to "identify and match [DNA] samples, which she
    had not collected and tests she had not performed."          Without much
    explanation, he relies on Meléndez-Díaz v. Massachusetts, 
    557 U.S. 305
     (2009).      Moreover, Velázquez summarily asserts that "the
    admission of the DNA evidence was crucial to the government's case"
    and therefore "[a] new trial should be ordered."
    Because the government urges us to review this issue
    de novo, we apply the more defendant friendly standard here, even
    though the claim appears to not have been preserved.               Compare
    United States v. Díaz, 
    670 F.3d 332
    , 344 (1st Cir. 2012) (noting
    that   "we    consider   de   novo    whether   the   strictures   of   the
    Confrontation Clause have been met" when such claim was preserved
    below (quoting United States v. Vega-Molina, 
    407 F.3d 511
    , 522
    (1st Cir. 2005))), with United States v. Luciano, 
    414 F.3d 174
    ,
    177–78 (1st Cir. 2005) (reviewing for plain error an unpreserved
    Confrontation Clause claim).          "If a constitutional error has
    17  Velázquez asserts this claim with regards to DNA evidence
    obtained from Exhibit 55, Mieses's black pistol, Exhibit 79, swabs
    taken from Mieses's Ford pickup truck (which Velázquez incorrectly
    describes as taken from the Mitsubishi Outlander), and Exhibit 80,
    the "POLICIA" cap. While Velázquez avers that the government set
    forth DNA evidence linking him to Exhibit 9, Officer Rivera's
    service weapon, the transcript demonstrates that even though
    Rivera's firearm was tested, it did not yield a DNA profile.
    -25-
    occurred, we must order a new trial unless the government has shown
    that any error was 'harmless' beyond a reasonable doubt."                   United
    States v. Earle, 
    488 F.3d 537
    , 542 (1st Cir. 2007).
    The    government   contends      that      Velázquez     waived   his
    Confrontation Clause claim on appeal due to lack of developed
    argumentation,          and    that      regardless,            Meléndez-Díaz    is
    distinguishable from this case.            Moreover, it references Williams
    v. Illinois, 
    567 U.S. 50
     (2012), arguing that because Williams was
    a plurality opinion, its precise mandate and applicability to
    Velázquez's case is unclear.            Alternatively, and most forcefully,
    the government asserts that any potential error in allowing Carlson
    to testify about the DNA profiles was harmless beyond a reasonable
    doubt, as the DNA evidence was cumulative, not conclusive.
    We agree with the government's last point, and thus need
    not   delve    into     the   intricacies      of   the    relationship     between
    Carlson's     DNA-related      expert    testimony        and   the   Confrontation
    Clause.       In this case, there is overwhelming evidence linking
    Velázquez to the crimes for which he was convicted.                     Except for
    Mieses, who was killed by Velázquez, and Gómez, all witnesses that
    were victims or responding officers identified Velázquez in open
    court.    Moreover, Mieses's carjacking was caught on the Shell gas
    station security footage, from which Officer Rodríguez identified
    Velázquez.          Furthermore, at the time of his arrest, officers
    -26-
    recovered Mieses's gun and Officer Rivera's service firearm from
    Velázquez's waistband, Collazo's cellphone from Velázquez's bag,
    and Officer Fargas's "POLICIA" cap and Gómez's gold chain from the
    Mercury Mountaineer.     Additionally, Officer Fargas testified that
    he had his "POLICIA" cap in his patrol car when Velázquez took it,
    and Officer Caldero testified that he saw Velázquez get out of the
    Mercury Mountaineer at Villa Fontana, where Velázquez was later
    arrested.   Finally, ballistic expert Erich Smith, an FBI forensic
    scientist and firearms and tool marks examiner, testified that
    Mieses's gun was used during the shootouts with Officers Rivera
    and León near the Plaza Carolina shopping mall, Officers León and
    Fargas near the summer camp, and Officer Caldero near Villa
    Fontana.
    We need not go on.    In the context of all the evidence
    presented at trial, it is clear that Carlson's testimony regarding
    the DNA evidence found on Mieses's firearm, his Ford pickup truck,
    and Fargas's hat was "at best cumulative of other compelling proof
    that [the defendant] committed the charged [crimes]."          Earle, 
    488 F.3d at 546
     (quoting United States v. Bartelho, 
    129 F.3d 663
    , 670
    (1st Cir. 1997)).   Thus, any error was harmless beyond a reasonable
    doubt.
    C.   Sufficiency of the Evidence for Counts 7 and 8
    Velázquez   next   argues    that   the   government   did   not
    -27-
    present sufficient evidence to prove Count 7 charging him with
    carjacking the Mercury Mountaineer and Count 8 charging him with
    possessing a firearm in furtherance of that carjacking.
    The elements of a carjacking offense under 
    18 U.S.C. § 2119
    (1) are the following: (1) the taking or attempted taking
    from the person or presence of another; (2) of a motor vehicle
    that has been transported, shipped, or received in interstate or
    foreign commerce; (3) through the use of force, violence, or
    intimidation; (4) with the intent to cause death or serious bodily
    harm.    United States v. García-Álvarez, 
    541 F.3d 8
    , 16 (1st Cir.
    2008).     The government bears the burden of proving all elements.
    
    Id.
         Additionally, Count 8 required the government to prove that
    Velázquez    possessed      a   firearm   in   furtherance    of   a   crime    of
    violence, in this case, carjacking.            
    18 U.S.C. § 924
    (c)(1)(A).
    Velázquez only asserts a lack of evidence regarding the
    first element of a carjacking offense, the taking of a motor
    vehicle.     In support, he asserts four arguments: (1) that the
    victim, Gómez, did not identify him as the assailant; (2) that
    Gómez's initial testimony labeled the stolen SUV as a white Ford
    SUV,    rather   than   a   white   Mercury    Mountaineer;    (3)     that    the
    government did not connect the stolen Mercury Mountaineer to Gómez,
    as there is no video from the gas station showing the taking or
    another witness's testimony to that effect; and finally, (4) that
    -28-
    Officer Fargas never testified his "POLICIA" cap was missing.
    As to Count 8, Velázquez argues that Gómez only testified
    that he felt "something like metal" touching his side during the
    alleged carjacking rather than specifically seeing a weapon at the
    time of the taking.       Velázquez insists that the item Gómez felt
    could have been any number of things, not necessarily a gun.          Based
    on these points, Velázquez claims that the court should reverse
    the conviction on Counts 7 and 8 because no rational jury could
    have found the government proved each element beyond a reasonable
    doubt.
    The government does not contest Velázquez's assertion
    that   he   preserved    this   challenge   to   the   sufficiency   of   the
    evidence, so we review the court's Rule 29 determination de novo.
    See United States v. Díaz-Rosado, 
    857 F.3d 116
    , 120 (1st Cir.
    2017).      In doing so, "we examine the evidence, both direct and
    circumstantial, in the light most favorable to the prosecution and
    decide whether that evidence, including all plausible inferences
    drawn therefrom, would allow a rational factfinder to conclude
    beyond a reasonable doubt that the defendant committed the charged
    count or crime."        
    Id.
     (quoting United States v. Cruz-Díaz, 
    550 F.3d 169
    , 172 n.3 (1st Cir. 2008)).
    Because Velázquez focused only on the first element
    required to prove a carjacking under 
    18 U.S.C. § 2119
    (1), we do so
    -29-
    here as well.    The government presented overwhelming evidence that
    Velázquez took the white Mercury Mountaineer from Gómez and that
    he   possessed   a   firearm   in   furtherance   of   that   carjacking.
    Velázquez is correct in that Gómez never identified his assailant
    nor the firearm used in the offense.         However, he ignores the
    plethora of circumstantial evidence linking him to the taking of
    Gómez's Mercury Mountaineer at gun point.
    First, a rational jury could have found that Velázquez's
    actions during the carjacking, along with the evidence found on
    him at the moment of his arrest, show beyond a reasonable doubt
    that he took Gómez's vehicle while possessing a firearm.           Gómez
    testified that a man dressed in black approached him, placed a
    metal object on his side, told him to hurry up and give him the
    keys to the SUV because he had just injured a police officer, and
    ripped a gold chain from his neck before leaving with the vehicle.
    Because the jury heard evidence that Velázquez had shot and injured
    Officer Rivera earlier that day, Velázquez's own statements to
    Gómez support an inference that he was the one who took the Mercury
    Mountaineer.
    Additionally, Officer Caldero testified that he saw
    Velázquez get out of the Mercury Mountaineer at Villa Fontana,
    where Velázquez was later arrested.        Officers found a "POLICIA"
    cap inside that Mercury Mountaineer, linking it to Velázquez's
    -30-
    carjacking of Officer Fargas's police cruiser, which Velázquez
    left near the Total gas station where the Mercury Mountaineer was
    carjacked.   Officers also found Gómez's gold chain inside the
    Mountaineer, linking Velázquez to Gómez and the taking of his
    Mountaineer once again.    Moreover, after the arrest, police found
    two stolen firearms in Velázquez's possession, allowing the jury
    to conclude that the metal object Gómez felt was a gun.
    Furthermore,    the   government   presented   evidence   that
    Velázquez carjacked two other people in a similar manner, including
    with threats and a firearm.     The surveillance video from Mieses's
    carjacking shows Velázquez approached Mieses with a firearm and
    shot him prior to taking the car.            As to the carjacking of
    Collazo's Mitsubishi Outlander, Collazo explained that Velázquez
    approached him from behind, held a weapon to the back of his head
    and threatened death if he did not comply.      He saw the gun and was
    able to describe it.     See United States v. Cruz-Rivera, 
    904 F.3d 63
    , 69 (1st Cir. 2018) (explaining that "[g]iven that the victims
    of the other two carjackings each also testified . . . that the
    defendant had used a gun in committing the carjackings that they
    endured, a jury could have inferred from the victims' testimony in
    combination that [the defendant] had access to multiple 'firearms'
    and had used one in committing each of these crimes").              Both
    Collazo and Font, his friend, testified that Velázquez was dressed
    -31-
    in black, just like the man that took Gómez's Mercury Mountaineer.
    Finally, Gómez's initial identification of the stolen
    vehicle as a Ford SUV, juxtaposed to his later identification of
    the car as the Mercury Mountaineer in Exhibits 37 and 38, required
    a credibility determination from the jury.            United States v.
    Lipscomb, 
    539 F.3d 32
    , 40 (1st Cir. 2008).        Gómez was given a
    chance to clarify his statement and identify the correct car.
    When he did just that, a jury could have found him believable and
    their decision to do so should not be disturbed.
    Considering   all   the   evidence   and    the   reasonable
    inferences derived therefrom in the light most favorable to the
    verdict, we conclude that a reasonable jury could have found beyond
    a reasonable doubt that Velázquez took the Mercury Mountaineer
    from Gómez while using a firearm, thus sufficiently establishing
    the challenged elements of Counts 7 and 8.
    D.   Challenged Jury Instruction
    As to the second trial for the severed Count 9, Velázquez
    first contends that the court "failed to caution the jury against
    premature deliberations."
    On March 6, 2017, after empaneling the jury for the
    second trial, the court provided preliminary instructions.       As to
    premature deliberations, the court instructed:
    Until this case is submitted to you for your
    deliberations, you must not discuss this case with
    -32-
    anyone or remain within hearing of anyone discussing
    it. . . . After this case has been submitted to you
    for your deliberations, you must discuss this case
    only in the jury room when all of you are present.
    At the end of the day, the court reiterated that the jury should
    "not discuss this case with anyone."           Before a lunch recess on the
    second day of trial, the court stated: "Remember my instructions
    not to discuss it with anyone."        And on the close of the third day
    of trial, after the government had rested its case, the court
    specified: "You have not heard yet the closing arguments nor the
    instructions of the [c]ourt, so you cannot talk to anybody or talk
    among yourselves about the case."
    Velázquez    concedes      that     the    court    did    impart
    instructions warning the jury against premature deliberations, but
    asserts    they   were   insufficient    because       the   court   failed   to
    specifically tell the jurors "to refrain from discussing the case
    amongst themselves[] until after the end of the government's case
    in chief."    Velázquez further admits that he did not object to the
    instructions below, so we should review his argument on appeal for
    plain error.      See United States v. Henry, 
    848 F.3d 1
    , 13–14 (1st
    Cir. 2017) ("[T]he plain error hurdle, high in all events, nowhere
    looms larger than in the context of alleged instructional errors."
    (quoting United States v. Meadows, 
    571 F.3d 131
    , 145 (1st Cir.
    2009))).      Yet Velázquez does not fully develop his argument
    regarding the last two prongs of the plain error standard.               As to
    -33-
    the    third     element   --   that   the    alleged    error   affected   his
    substantial rights -- Velázquez simply asserts that the district
    court's omission, in and of itself, should "amount to a showing of
    individual prejudice, not only because the instruction was not
    given but because the instruction should have been given in
    accordance to the Pattern Criminal Jury Instructions for the
    District Courts of the First Circuit."                  Moreover, Velázquez's
    briefs are entirely silent as to the fourth prong of plain error
    review -- that any alleged error "seriously impaired the fairness,
    integrity,       or   public    reputation     of   judicial     proceedings."
    Montañez-Quiñones, 911 F.3d at 63-64 (quoting Duarte, 
    246 F.3d at 60
    ).
    Thus, we need not decide whether the district court erred
    or whether the alleged error was clear or obvious because, even
    assuming that Velázquez meets the first two prongs, his challenge
    fails under the last two prongs of the plain error standard.
    First, while Velázquez argues that failing to use this circuit's
    pattern jury instruction should itself amount to a showing that
    his substantial rights were affected, our precedent discredits his
    argument.       We have noted that "although pattern instructions are
    'often helpful,' their use is 'precatory, not mandatory.'"              United
    States v. Jadlowe, 
    628 F.3d 1
    , 17 n.29 (1st Cir. 2010) (quoting
    United States v. Urciuoli, 
    513 F.3d 290
    , 299 n.7 (1st Cir. 2008)
    -34-
    and United States v. Tse, 
    375 F.3d 148
    , 157 (1st Cir. 2004));
    see also United States v. Gómez, 
    255 F.3d 31
    , 39 n.7 (1st Cir.
    2001)   (emphasizing   district   court's      wide   discretion    in   jury
    instruction language). Moreover, to establish that his substantial
    rights were affected, we have reiterated that Velázquez had to
    show "a reasonable probability that, but for [the error claimed],
    the result of the proceeding would have been different."             United
    States v. Turbides-Leonardo, 
    468 F.3d 34
    , 39 (1st Cir. 2006)
    (quoting United States v. Padilla, 
    415 F.3d 211
    , 221 (1st Cir.
    2005) (en banc)).      Because Velázquez has not put forth any fact
    or argument that would support such a finding, he has failed to
    establish the third prong of plain error review.
    In any event, Velázquez waived his claim of error by
    failing to address the fourth prong of plain error review -- that
    the alleged error seriously impaired the fairness of the judicial
    proceedings.   See United States v. Severino-Pacheco, 
    911 F.3d 14
    ,
    20 (1st Cir. 2018) (noting that "failure to attempt to meet the
    four-part burden under plain error review constitutes waiver"
    (relying on United States v. Pabón, 
    819 F.3d 26
    , 33–34 (1st Cir.
    2016))).
    E.   Officer Rodríguez's Testimony as to the Severed Count 9
    Velázquez's    final   claim   of    error   is   that   Officer
    Rodríguez's testimony in the second trial violated his rights under
    -35-
    the Confrontation Clause.     To place this claim in context, we
    provide some background.    Severed Count 9 charged Velázquez with
    being a felon in possession of a firearm in violation of 
    18 U.S.C. § 922
    (g)(1) and § 924(a)(2). To prove this charge, the government
    had to establish that: (1) Velázquez was previously convicted of
    an offense punishable by more than one year in prison (meaning
    that he was a "felon"); (2) he knowingly possessed a firearm in or
    affecting interstate commerce, United States v. Wight, 
    968 F.2d 1393
    , 1397 (1st Cir. 1992); and (3) he knew he was a felon, Rehaif
    v. United States, 
    139 S. Ct. 2191
    , 2194 (2019).
    As to the first element, the government submitted a
    certified copy of a prior Puerto Rico court judgment reflecting
    that Velázquez was convicted of a felony in state court.18    This
    was a self-authenticating document pursuant to Rule 902(1)(A) of
    the Federal Rules of Evidence.    The government read portions of
    it to the jury, including the caption, which specifically mentioned
    Carmelo Velázquez-Aponte, and a paragraph that stated, "Having
    considered the allegation, the Court finds the accused guilty of
    the crimes of Article 5.04, pneumatic weapon, and condemns him to
    punishment of two years in jail without costs."     The government
    further noted that the document contained Velázquez's date and
    18   People of Puerto Rico v. Carmelo Velázquez-Aponte.
    -36-
    place of birth, sex, Social Security number, and address.              In
    addition, Officer Rodríguez testified that the Carmelo Velázquez-
    Aponte named in the judgment was the Velázquez on trial.19        Defense
    counsel objected to the testimony on the grounds of inadmissible
    hearsay, but the court overruled the objection because Officer
    Rodríguez had known Velázquez in the context of previous state
    court proceedings.
    While Velázquez suggests another standard of review, we
    review for plain error because he did not object on Confrontation
    Clause grounds below, instead raising a hearsay objection.            See
    Luciano, 
    414 F.3d at 178
     (reviewing for plain error because
    defendant "did not raise this Confrontation Clause or Crawford-
    type   claim   in   the   proceedings    below,"   rather   the   "defense
    objections were framed as hearsay and reliability objections").
    Even if Velázquez had made some attempt at developed
    argumentation, and even if he had established the first two prongs
    of the plain error test, the third prong would be unsurmountable
    for him.   As discussed earlier, Velázquez would have to show that
    his substantial rights were affected in that "but for [the error
    claimed], the result of the proceeding would have been different."
    19 The government explained that it was presenting this testimony
    because it did not "want [Velázquez] arguing in closing that it
    could be some other Carmelo Velázquez-Aponte."
    -37-
    Turbides-Leonardo, 
    468 F.3d at 39
     (quoting Padilla, 
    415 F.3d at 221
    ).   Yet here, the government established that Velázquez was a
    felon via a self-authenticating official state court document,
    which contained Velázquez's identifying information and which
    Velázquez did not challenge in any way.           Thus, there would have
    been no reason for the jury to second-guess the contents of an
    official state court conviction even absent Officer Rodríguez's
    testimony.    In the end, Velázquez's claim cannot prevail.
    III.    Conclusion
    For   the   foregoing   reasons,     we   affirm   Velázquez's
    convictions.
    Affirmed.
    -38-