United States v. Burgos , 703 F.3d 1 ( 2012 )


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  •            United States Court of Appeals
    For the First Circuit
    No. 11-1877
    UNITED STATES OF AMERICA,
    Appellee,
    v.
    CARLOS BURGOS,
    Defendant, Appellant.
    APPEAL FROM THE UNITED STATES DISTRICT COURT
    FOR THE DISTRICT OF MASSACHUSETTS
    [Hon. F. Dennis Saylor, IV, U.S. District Judge]
    Before
    Torruella, Ripple,* and Howard, Circuit Judges.
    Gail S. Strassfeld for appellant.
    Katherine Ferguson, Assistant United States Attorney, with
    whom Carmen M. Ortiz, United States Attorney, was on brief, for
    appellee.
    ____________
    December 14, 2012
    *
    Of the Seventh Circuit, sitting by designation.
    RIPPLE, Circuit Judge. A jury convicted Carlos Burgos of
    one count of conspiring to distribute and to possess with intent to
    distribute marijuana, in violation of 
    21 U.S.C. § 846
    .                     Mr. Burgos
    challenges          the    sufficiency     of    the   evidence   to     support   the
    conviction and also claims that the district court erred in giving
    a “willful blindness” instruction.                 For the reasons set forth in
    the following opinion, we reverse the judgment of the district
    court and remand the case to the district court with instructions
    to enter a judgment of acquittal.
    I
    BACKGROUND
    A.    Facts1
    1.    Relationship between Mr. Burgos and Ramos
    Mr. Burgos worked as a uniformed patrol officer for the
    city of Worcester, Massachusetts.                Between 2005 and March 2009, he
    was   assigned        to    a   specific   beat    known   as   “Route    13,”   which
    encompasses a high-crime area known as “Main South.”2                     In addition
    to uniformed police officers, members of the Worcester Police
    Department’s Vice Squad and Gang Unit regularly patrol the area.
    1
    Because the jury found Mr. Burgos guilty of the charged
    crime, we view the evidence, and all reasonable inferences
    therefrom, in the light most favorable to the Government. See,
    e.g., United States v. Casas, 
    356 F.3d 104
    , 126 (1st Cir. 2004).
    2
    See R.326 at 109.
    2
    Mr.   Burgos’s   brother-in-law   worked   at   an automobile
    repair shop located in Main South, G & V General Auto Repair
    (“G & V”).    Both during and after this time, Rolando Ramos also
    worked at G & V;3 Ramos was not a mechanic, but rather helped by
    “taking money . . . [to] the bank,” “pick[ing] up parts that were
    needed in the shop” and “driving the . . . lift.”4          Mr. Burgos’s
    brother-in-law described Ramos as “the shop’s tow truck driver.”5
    In addition to his legitimate work at G & V, Ramos also ran a
    marijuana distribution network.6       Although Ramos never met his
    suppliers at G & V, he did meet with customers and transact sales
    at that location. Ramos testified that he spoke to at least one of
    his co-workers at G & V about his illicit drug business,7 but that
    3
    Ramos’s brother-in-law, Ramon Valerio, owned G & V.
    4
    R.327 at 85.
    5
    R.328-1 at 72.
    6
    Ramos, who testified on behalf of the Government pursuant
    to a plea agreement, estimated that he distributed approximately
    2,500 pounds of marijuana between 2005 and his arrest in March
    2009.   R.327 at 57-58.     During the last five months of the
    conspiracy, Ramos also began distributing cocaine. Id. at 58. He
    obtained a total of approximately four kilograms of cocaine, but,
    when asked how much cocaine he sold, Ramos testified that he
    “c[ould]n’t say exactly, because [he] was using more than [he] was
    selling.” Id.
    7
    See id. at 81.
    3
    he did not discuss his drug business with, or conduct any sales in
    the presence of, Mr. Burgos’s brother-in-law.8
    While his brother-in-law worked at G & V, Mr. Burgos
    would go to the garage “very frequent[ly]” to visit and to have his
    car   repaired.9     On    one   of   these   occasions,   Ramos   overheard
    Mr. Burgos tell his brother-in-law that the area was “hot,” which
    Ramos took to mean that it was being watched by the police.10
    Sometime before April 2006, Mr. Burgos’s brother-in-law
    stopped working at G & V, and, consequently, Mr. Burgos used G & V
    less frequently for repairs.11        The mechanics at G & V continued to
    give Mr. Burgos a discount; however, the extent of the discount
    varied among the mechanics, who worked on commission and set their
    own prices for car repair services.
    Ramos characterized his relationship with Mr. Burgos as
    a “friendship.”12    Ramos met some members of Mr. Burgos’s family,
    but never went into his house; the only time that Ramos went to
    Mr. Burgos’s house was to tow a car.            Mr. Burgos never went to
    8
    See R.328-1 at 43.
    9
    R.327 at 90.
    10
    Id. at 94-95.
    11
    Ramos estimated that Mr. Burgos brought his car in “[a]bout
    three times” after his brother-in-law left G & V. Id. at 106.
    Earlier in his testimony, Ramos stated that, after Mr. Burgos’s
    brother-in-law left G & V, Mr. Burgos brought his car in “[n]ot
    often, once a year, or once a month depending on what it was.” Id.
    12
    Id. at 101.
    4
    Ramos’s house.      On one occasion, Ramos helped Mr. Burgos’s sister
    and her infant son by towing her car and repairing a flat tire,
    which he did without charging her.                 The only indication of a
    personal relationship, rather than a professional relationship, is
    a phone call from Mr. Burgos to Ramos on Christmas day in 2009.13
    On   other    occasions,      Mr.   Burgos     purchased      from   Ramos   a   GPS
    navigation system for his father and a laptop computer. Ramos sold
    both items to Mr. Burgos for less than retail price.14                 Mr. Burgos
    also purchased a discounted set of vehicle tire rims at G & V.
    According to the record, the rims were displayed in the garage with
    a “for sale” sign on them;15 it is unclear whether Ramos personally
    was selling the rims or merely rang up the sale as an employee of
    G & V.
    In late 2008, Ramos noticed that a police officer who was
    known to work with the Worcester Police Department’s “Gang unit”
    was watching G & V through binoculars.16             The next day or so, Ramos
    told    Mr.   Burgos   that    someone       was   watching    the   garage,     and
    13
    That phone call was not recorded.
    14
    Ramos sold the laptop, which he later testified sold for
    $900 to $1,200 in stores, to Mr. Burgos for $200. Id. at 97.
    Ramos sold a GPS, which he later testified retailed for “about
    $129” to Mr. Burgos’s father, although Mr. Burgos conducted the
    transaction, for $60. Id. at 119.
    15
    Id. at 99-100. The set of four rims, according to Ramos’s
    later testimony, retailed for $1,000 to $1,200; Mr. Burgos paid
    $400 for them. Id. at 99.
    16
    Id. at 113-14.
    5
    Mr. Burgos “told [him] that it could be that the place was hot.”17
    Ramos understood “hot” to mean that G & V was being watched; he
    told Mr. Burgos, “I’ll be careful.”18
    Ramos later testified that he told his drug customers
    that he “had the protection of a police officer,” although he did
    not “mention that person by name.”19      These statements convinced at
    least one individual that it was safe to purchase marijuana from
    Ramos.      At trial, Ramos disclaimed any truth to these statements:
    “[W]henever I was high, I was trying to bluff and appear as if I
    was the king.”20     Ramos characterized his statements as “bragging
    or gloating” and explained that, contrary to what he told people,
    he did not “have a cop under [his] wing.”21        After being arrested,
    Ramos told one of his drug customers, who also had been arrested,
    that “he d[id]n’t understand why the cop [Mr. Burgos] got arrested
    with    [them].”22     Ramos   also   testified   that   he   “never”   told
    Mr. Burgos that he was a drug dealer, “never” discussed drugs with
    17
    Id. at 115.
    18
    Id. at 116.
    19
    Id. at 124.
    20
    Id.  Ramos testified that he used narcotics, including
    cocaine and Percocet, on a daily basis.
    21
    R.328-1 at 33.
    22
    Id. at 56; see also id. at 67 (drug customer agreeing that
    Ramos had stated that he (Ramos) “didn’t know why [Mr. Burgos] got
    arrested, because [Mr. Burgos] didn’t do anything”).
    6
    him and did not engage in any drug deals when Mr. Burgos was
    present because he did not want Mr. Burgos to know about his drug
    business.23
    2.   Investigation of Ramos
    Beginning in early 2009, a multi-agency drug task force
    began investigating Ramos’s drug distribution network.                   Officers
    from several agencies, including the Worcester Police Department,
    the Massachusetts State Police, the Drug Enforcement Administration
    (“DEA”) and the United States Postal Inspection Service conducted
    surveillance of Ramos at G & V, as well as at other locations.                As
    part of their surveillance efforts, the officers drove unmarked
    vehicles. Of particular relevance to this appeal is that Worcester
    Detective Kellen Smith drove a white Ford Explorer, Worcester
    Detective     Jeff     Carlson    drove       a   maroon   Dodge   Intrepid   and
    Massachusetts State Police Officer Nicholas Nason drove a green
    Ford Escape.
    On   the    morning    of     January    14,   2009,   the   officers
    conducting surveillance on G & V saw Mr. Burgos’s marked police
    vehicle parked in a parking lot on the same street as the garage.24
    They watched as Ramos’s vehicle drove up next to Mr. Burgos’s, and
    23
    R.327 at 116; R.328-1 at 40, 19.
    24
    This was not unusual; one of the officers later agreed that
    “officers from time to time park[ed] in the . . . parking lot.”
    R.326 at 153.
    7
    the two men proceeded to have a five- or ten-minute conversation.
    According to Ramos’s later testimony, Ramos had seen Mr. Burgos
    sitting in his marked police vehicle; he pulled next to Mr. Burgos
    and told him he “was being followed by cars,” one red and one
    white, and he asked Mr. Burgos who was following him.25      At the time
    he asked, Ramos was “75 to 90 percent [certain] that they were
    police cars.”26     Ramos later testified that he “wanted to make sure
    that [he] knew who it was that was following [him].”27         According
    to Ramos, the meeting was not prearranged; when asked why Ramos
    turned to Mr. Burgos to obtain that information, he testified:        “I
    don’t know.      I saw him, and I went up to him and asked him.”28
    Mr. Burgos told Ramos “that he was going to find out what they
    were.”29
    Later     that   day,   Ramos   called   Mr.   Burgos;   that
    conversation was captured by an existing wiretap. That transcript,
    which was introduced at trial, reads as follows:30
    BURGOS:      [Aside . . . hold on, no . . .] Hello!
    25
    R.327 at 128.
    26
    Id. at 129.
    27
    Id.
    28
    Id.
    29
    Id.
    30
    The conversation was in Spanish, but later was translated
    into English.
    8
    RAMOS:    Tell me, Carlos.
    BURGOS:   How are you?       What’s up?
    RAMOS:    Tell me, did you find out about
    that for me, or not?
    BURGOS:   Uh . . . yes, but no . . . I don’t
    know if for there . . . there were
    two. Uh . . . the white one and the
    red one.
    RAMOS:    Yes, but I saw that one already,
    there’s the white one and a green
    van, too.
    BURGOS:   [Unintelligible].
    RAMOS:    A green one.       Did you hear?
    BURGOS:   But I don’t know if it is for over
    there, but, uh . . . they’re down
    there, yes.
    RAMOS:    I know they’re down here.
    BURGOS:   Yes, so let’s take it easy for now.
    RAMOS:    Yes, I know, I know, I know . . .
    that’s why I told you that. I know.
    BURGOS:   Yes, yes, yes . . .
    RAMOS:    Okay.
    BURGOS:   Okay?
    RAMOS:    Okay.
    BURGOS:   Okay.   Bye.[31]
    31
    Id. at 130-31.
    9
    Ramos later testified that he understood that Mr. Burgos was
    telling him that police were observing either Ramos or G & V,32 and
    telling him “[t]hat [he] had to take it easy if [he] was doing
    something against the law.”33 About an hour after that conversation
    with Mr. Burgos, Ramos called his marijuana supplier and informed
    him that police were in the area.              Shortly after that, Ramos called
    a    customer    and     gave    him   similar       information.       After   these
    conversations,      which       also   were    captured    by    the   wiretap,   the
    officers changed their surveillance vehicles. At no point in their
    investigation did the officers focus any surveillance efforts on
    Mr. Burgos.
    After additional investigation, the officers executed
    search warrants on Ramos’s house, where they recovered marijuana,
    cocaine and a firearm.
    B.    District Court Proceedings
    A   grand    jury    charged      Mr.    Burgos    with   one   count of
    conspiring to distribute and to possess with intent to distribute
    marijuana.       Ramos and Detectives Smith and Carlson were the chief
    witnesses for the Government.            In addition to the events set forth
    32
    Ramos testified that he understood Mr. Burgos to mean “that
    we were being watched,” but counsel did not draw out any further
    explanation as to whether Ramos meant “we” to mean G & V, his
    marijuana distribution network or Ramos himself. Id. at 132.
    33
    Id. at 133.
    10
    above, Detectives Smith and Carlson testified concerning their
    interactions with Mr. Burgos while serving on the police force
    together.
    Detective Smith testified that he began working in Route
    13 when he was serving in the Community Impact Division.                    He
    explained that he “concentrated a lot of effort and time there in
    the Antiviolence Unit, and in the vice squad we do a lot of work
    down there as well.”34     Before he joined the Vice Squad, Detective
    Smith would see Mr. Burgos “quite frequently,” but “didn’t work
    directly with [Mr. Burgos] on many occasions.”35              As an officer on
    the Vice Squad, Detective Smith saw Mr. Burgos “[s]everal times a
    week”; he stated that “[a] typical area that I would run into
    Carlos was at the -- the pumps,” by which Detective Smith meant
    “[t]he gas pumps at the Worcester Police headquarters.”36 Detective
    Smith also provided general information about the Vice Squad.
    Detective Smith testified that the Vice Squad conducts “[n]arcotics
    investigations, prostitution investigations, and illegal gambling
    investigations.”37      He further stated that the Vice Squad spends
    approximately    ninety      percent        of   its   time     on   narcotics
    investigations, nine percent on prostitution-related crimes and “a
    34
    R.326 at 110.
    35
    Id.
    36
    Id. at 111, 113.
    37
    Id. at 106.
    11
    very small fraction” on illegal gaming and that he was familiar
    with those percentages before joining the Vice Squad.38
    Detective Carlson, who has “worked [his] whole career in
    the Main South area, both in the Community Impact Division and in
    the vice squad,” testified that, “[w]hen [he] was assigned to the
    Impact Division, [he] would encounter Carlos almost on a daily
    basis throughout the day.”39        When Detective Carlson was assigned
    to   the   Vice   Squad,   Mr.   Burgos      “congratulated”   him     and   told
    Detective    Carlson     to   “do   a   good    job   up   there.”40         After
    Detective Carlson joined the Vice Squad, however, he and Mr. Burgos
    “didn’t really work on operations together.”41             Detective Carlson
    explained that they
    would encounter each other on the street on a
    fairly regular basis.      Again, route officers
    frequently assist the vice squad with stops and
    arrests; and if there was some type of emergency
    call and I wasn’t tied up doing vice squad duties,
    I would certainly go to that area and assist route
    officers with their -- their 911 call.”[42]
    At the close of the Government’s evidence, Mr. Burgos
    moved for acquittal under Federal Rule of Criminal Procedure 29.
    The district court denied the motion.           Mr. Burgos did not call any
    38
    Id. at 107.
    39
    Id. at 178.
    40
    Id. at 179.
    41
    Id. at 181.
    42
    Id.
    12
    witnesses. At the request of the Government, and over Mr. Burgos’s
    objection, the court gave the jury a willful blindness instruction;
    it stated:
    The second element that     the government must
    prove beyond a reasonable       doubt is that the
    defendant knew the essential    purpose or nature of
    the conspiracy charged in the   indictment.
    The government must prove beyond a reasonable
    doubt that the defendant knew that the essential
    purpose and general aim of the conspiracy was: (1)
    to possess a controlled substance with intent to
    distribute it or (2) to distribute a controlled
    substance.   Although you need not find that the
    defendant knew that the conspiracy involved
    marijuana specifically, you must find that he knew
    it involved a controlled substance.     It is not
    enough for the government to prove merely that the
    defendant knew that the conspiracy involved
    something illegal.
    It is, of course, impossible to prove directly
    the inner workings of the human mind.      Thus, in
    deciding whether the defendant acted knowingly, you
    may consider his statements and actions, the
    surrounding facts and circumstances, and any
    reasonable inferences that may be drawn from those
    facts and circumstances.
    You may infer that the defendant had knowledge
    of a particular fact if you find beyond a
    reasonable doubt that he deliberately avoided
    learning a fact that otherwise would have been
    obvious to him, under the circumstances outlined
    below.
    In order to infer knowledge of a fact under
    such circumstances, you must find beyond a
    reasonable doubt that the government has proved two
    things:
    First, that the defendant was aware of a high
    probability of the existence of a fact; and
    13
    Second,    that the defendant consciously and
    deliberately   avoided learning of that fact; that
    is, that he    willfully made himself blind to the
    existence of   the fact.
    You may draw that inference, but you do not
    have to; it is entirely up to you.
    Conscious   and   deliberate  avoidance   of
    knowledge may be established by proof that the
    defendant deliberately refused to ask questions
    about, or make inquiries about, or investigate,
    suspicious activities once his suspicion had been
    aroused.
    Mere negligence or mistake in failing to
    investigate or learn a fact is not enough. Thus,
    it is not enough that a reasonable person in the
    defendant’s position would have known a fact, or
    would have made further inquiry; you must find that
    the defendant consciously and deliberately remained
    ignorant of that fact.
    It is not enough for the government to prove
    that the defendant knew, or was willfully blind to,
    the fact that something illegal was occurring.
    Rather, the government must prove beyond a
    reasonable doubt that the defendant knew, or was
    willfully blind to, the fact that the illegal
    activity involved a controlled substance.
    This   instruction   applies     only to the
    “knowledge” element of the conspiracy. The third
    element of a conspiracy -- that the defendant
    willfully joined the conspiracy cannot be . . .
    established by willful blindness.[43]
    The jury convicted Mr. Burgos on the single count of the
    indictment, and the district court denied his renewed motion for
    acquittal.   Mr. Burgos timely appealed.
    43
    R.329 at 63-66.
    14
    II
    DISCUSSION
    We review de novo the district court’s denial of a Rule
    29 motion for judgment of acquittal, viewing all the evidence in
    the light most favorable to the jury’s verdict.      United States v.
    Pérez-Meléndez, 
    599 F.3d 31
    , 40 (1st Cir. 2010).         The ultimate
    question for this court is whether the evidence, both direct and
    circumstantial, and all plausible inferences drawn therefrom, would
    allow a rational jury to conclude that the Government had proven
    each element of the crime beyond a reasonable doubt.      
    Id.
    A.   Standard for Sufficiency of the Evidence
    1.
    Although     the   standard     of   review   incorporates
    “prosecution-friendly overtones . . . , appellate oversight of
    sufficiency challenges is not an empty ritual.”      United States v.
    Ortiz, 
    966 F.2d 707
    , 711-12 (1st Cir. 1992).      This is because the
    reasonable-doubt standard “is a prime instrument for reducing the
    risk of convictions resting on factual error.”     In re Winship, 
    397 U.S. 358
    , 363 (1970).    As the Court explained in Winship,
    The requirement of proof beyond a
    reasonable doubt has this vital role in our
    criminal procedure for cogent reasons.     The
    accused during a criminal prosecution has at
    stake interest of immense importance, both
    because of the possibility that he may lose
    his liberty upon conviction and because of the
    certainty that he would be stigmatized by the
    15
    conviction.    Accordingly, a society that
    values the good name and freedom of every
    individual should not condemn a man for
    commission of a crime when there is reasonable
    doubt about his guilt. . . . To this end, the
    reasonable-doubt standard is indispensable,
    for it impresses on the trier of fact the
    necessity of reaching a subjective state of
    certitude of the facts in issue.
    
    Id. at 363-64
       (citation   omitted)   (internal   quotation   marks
    omitted).    The reasoanble-doubt standard not only gives “concrete
    substance for the presumption of innocence,” 
    id. at 363
    , but also
    gives the citizenry confidence in the fairness of its criminal
    justice system:
    [U]se of the reasonable-doubt standard is
    indispensable to command the respect and
    confidence of the community in applications of
    the criminal law.    It is critical that the
    moral force of the criminal law not be diluted
    by a standard of proof that leaves people in
    doubt   whether   innocent    men   are   being
    condemned. It is also important in our free
    society that every individual going about his
    ordinary affairs have confidence that his
    government cannot adjudge him guilty of a
    criminal offense without convincing a proper
    factfinder of his guilt with utmost certainty.
    
    Id. at 364
    .
    “Despite the importance of the reasonable doubt standard
    in safeguarding the rights of criminal defendants, the term has
    eluded clear definition.” United States v. Olmstead, 
    832 F.2d 642
    ,
    645 (1st Cir. 1987). Indeed, we have observed that “[m]ost efforts
    at clarification result in further obfuscation of the concept.”
    
    Id.
       Nevertheless, “we have attempted to describe the level of
    16
    certainty necessary to support a criminal conviction.”              Morgan v.
    Dickhaut, 
    677 F.3d 39
    , 47 (1st Cir. 2012).                 We will “not give
    credence to ‘evidentiary interpretations and illations that are
    unreasonable, insupportable, or overly speculative.’”              Leftwich v.
    Maloney, 
    532 F.3d 20
    , 23 (1st Cir. 2008) (quoting United States v.
    Spinney, 
    65 F.3d 231
    , 234 (1st Cir. 1995)).            The existence of some
    metaphysical doubt, however, does not require a verdict in favor of
    the    accused;    “it   is   enough   that   all   ‘reasonable’    doubts   be
    excluded.”      Stewart v. Coalter, 
    48 F.3d 610
    , 616 (1st Cir. 1995).
    A     verdict   satisfying      this   standard     “may   be   supported    by
    circumstantial evidence alone,” Morgan, 
    677 F.3d at 47
    , but we also
    have noted the limitations of circumstantial evidence:              “[W]e are
    loath to stack inference upon inference in order to uphold the
    jury’s verdict.”         United States v. Valerio, 
    48 F.3d 58
    , 64 (1st
    Cir. 1995).       In the end,
    [i]f the evidence viewed in the light most
    favorable to the verdict gives equal or nearly
    equal circumstantial support to a theory of guilt
    and a theory of innocence of the crime charged,
    this court must reverse the conviction. This is so
    because . . . where an equal or nearly equal theory
    of guilt and a theory of innocence is supported by
    the evidence viewed in the light most favorable to
    the prosecution, a reasonable jury must necessarily
    entertain a reasonable doubt.
    United States v. Flores-Rivera, 
    56 F.3d 319
    , 323 (1st Cir. 1995)
    (alterations in original) (internal quotation marks omitted).
    2.
    17
    In this case, Mr. Burgos was convicted of conspiracy to
    distribute and to possess with intent to distribute marijuana.                To
    affirm his conviction, we must determine whether a reasonable jury
    could conclude that the Government proved beyond a reasonable doubt
    each element of the crime:              (1) “a conspiracy existed,” (2)
    Mr. Burgos “had knowledge of the conspiracy” and (3) Mr. Burgos
    “knowingly and voluntarily participated in the conspiracy.” United
    States v. Dellosantos, 
    649 F.3d 109
    , 116 (1st Cir. 2011).                  With
    respect to the second element, the Government must establish that
    the defendant had knowledge of the crime charged.               Pérez-Meléndez,
    
    599 F.3d at 43
    .       Showing that the defendant had knowledge of
    generalized illegality is insufficient, id.; the Government must
    show that the defendant knew the conspiracy involved a controlled
    substance, but need not show that the defendant knew the specific
    controlled substance being distributed, 
    id. at 41
    .
    The Government may satisfy its burden in two ways:                with
    evidence of actual knowledge or with evidence of willful blindness.
    
    Id.
     (“Willful blindness serves as an alternate theory on which the
    government may prove knowledge.”). To establish willful blindness,
    the Government must prove that Mr. Burgos “was aware of a high
    probability”    of   the    existence     of   a   conspiracy    to   distribute
    controlled     substances    and   that      Mr.   Burgos   “consciously    and
    deliberately avoided learning of that fact.”                 United States v.
    Lizardo, 
    445 F.3d 73
    , 85 n.7 (1st Cir. 2006).               The Government can
    18
    satisfy its burden with direct or circumstantial evidence, but, as
    we already have stated, “charges of conspiracy cannot be made out
    by piling inference upon inference.” United States v. DeLutis, 
    722 F.2d 902
    , 907 (1st Cir. 1983) (citing Direct Sales Co. v. United
    States, 
    319 U.S. 703
    , 711 (1943)).
    Turning   to   the   third   element   of   the   conspiracy
    charge--whether Mr. Burgos knowingly and voluntarily participated
    in the conspiracy--“the evidence must establish that the defendant
    both intended to join the conspiracy and intended to effectuate the
    objects of the conspiracy.”     Dellosantos, 
    649 F.3d at 116
    .        A
    defendant “must in some sense promote [the conspiracy] himself,
    make it his own, have a stake in its outcome.”        United States v.
    Aponte-Suárez, 
    905 F.2d 483
    , 491 (1st Cir. 1990) (alteration in
    original) (internal quotation marks omitted). Although a financial
    stake in the success of the conspiracy is not “essential” to
    establish this element, United States v. Isabel, 
    945 F.2d 1193
    ,
    1203 (1st Cir. 1991), we have suggested that it is not reasonable
    to conclude that a defendant who is “indifferent” to the conspiracy
    was a member of it, see Dellosantos, 
    649 F.3d at
    122-23 & n.15.
    Mr. Burgos concedes the existence of a conspiracy; he
    challenges, however, the Government’s proof with respect to the
    second and third elements of the charged conspiracy.          We turn
    first, therefore, to the element of knowledge.
    19
    B.   Evidence at Trial--Knowledge
    1.
    The Government maintains that the evidence presented at
    trial would allow a reasonable jury to conclude beyond a reasonable
    doubt that Mr. Burgos had actual knowledge of, or was willfully
    blind to, Ramos’s drug operations.           The Government points to three
    pieces of evidence that, it believes, taken together, create an
    inference of knowledge on Mr. Burgos’s part. The Government argues
    that,
    [g]iven Burgos’s regular interaction with the
    Vice Squad on his assigned patrol route, which was
    within an area replete with drug crime, and his
    comments to Carlson, which suggested a familiarity
    with the work of the Vice Squad, a jury could
    reasonably have inferred that Burgos knew that the
    Vice Squad investigated primarily drug crime. And
    given this inference, the jury could reasonably
    have inferred that once Burgos discovered that the
    Vice Squad was surveilling Ramos, Burgos knew or
    was willfully blind to the existence of Ramos’s
    drug distribution activity.[44]
    When    we    evaluate   the     evidence   presented    at   trial,
    however, we are unable to conclude that the inferences drawn by the
    Government, and apparently by the jury, are supported by the
    evidence.   First,       Mr. Burgos’s “regular interaction with the Vice
    Squad on his assigned patrol route” did not establish Mr. Burgos’s
    knowledge of the Vice Squad’s work distribution.              Detective Smith
    testified   that,    once    he   was   assigned   to   the   Vice   Squad,   he
    44
    Appellee’s Br. 17.
    20
    encountered Mr. Burgos “[s]everal times a week,” but that a typical
    encounter    was   at    “[t]he   gas   pumps     at   the    Worcester   Police
    Headquarters.”45        Detective Carlson related that, when he was
    assigned to the Community Impact Division, he “would encounter
    [Mr. Burgos] almost on a daily basis throughout the day.”46                  Once
    Detective Carlson joined the Vice Squad, however, he and Mr. Burgos
    “didn’t really work on operations together.”47               They did “encounter
    each other on the street on a fairly regular basis”; Detective
    Carlson explained that “route officers frequently assist[ed] the
    vice squad with stops and arrests,” and, when Vice Squad members
    were available, they would assist route officers with their 911
    calls.48    Detective Carlson did not quantify how many, or what
    percentage, of the arrests with which Mr. Burgos assisted were drug
    arrests.     Nor did he further explain what percentage of their
    encounters on the street were incidents of Detective Carlson
    assisting    Mr.   Burgos,   as   opposed    to   vice   versa.       From   this
    evidence, a jury reasonably could infer that Mr. Burgos knew
    Detectives Smith and Carlson and that he also knew the types of
    crimes that the Vice Squad investigated.               None of this evidence
    suggests, however, that Mr. Burgos knew what percentage of the Vice
    45
    R.326 at 111, 113.
    46
    
    Id. at 178
    .
    47
    
    Id. at 181
    .
    48
    
    Id.
    21
    Squad’s time and effort was devoted to drug crimes, as opposed to
    prostitution or gambling.
    The same is true with the evidence concerning the area
    Mr. Burgos patrolled.        The Government points to the fact that the
    Main South area was “an area replete with drug crime” to establish
    that    Mr.    Burgos     must    have     known    that   the    Vice   Squad    was
    investigating      drug    crimes     at    G   &   V.49    Evidence     at    trial
    established, however, that Main South was known to be a “high
    crime” area and that not only drug crimes, but also prostitution
    and other crimes were prevalent.50
    The Government also believes that Mr. Burgos’s comments
    to Detective Carlson when he was promoted to the Vice Squad support
    the inference that Mr. Burgos knew that the Vice Squad dedicated
    nearly all of its time to drug investigations.                   Mr. Burgos’s vague
    laudatory      statements        congratulating      two   co-workers     on     their
    promotions--“you and Kellen, you guys do a good job up there,”51--
    suggest some familiarity with the Vice Squad, but hardly suggests
    that he was familiar with the distribution of the Vice Squad’s
    workload.
    Viewing this evidence in the light most favorable to the
    Government, a reasonable jury could conclude, beyond a reasonable
    49
    Appellee’s Br. 17.
    50
    R.326 at 60, 153.
    51
    
    Id. at 179
    .
    22
    doubt, that Mr. Burgos knew that Main South was an area of high
    crime, and specifically high drug crime, that the Vice Squad
    investigated crimes involving drugs, prostitution and gaming, and
    that the Vice Squad was surveilling G & V.                 From this, a jury
    certainly could infer that Mr. Burgos was aware that the Vice Squad
    was investigating G & V for possible criminal activity that fell
    within its purview--drug crimes, prostitution or gaming.               None of
    the evidence, however, establishes, beyond a reasonable doubt, that
    the Vice Squad was investigating a drug crime, as opposed to
    prostitution or gaming.       As we have stated previously, “[i]f the
    evidence viewed in the light most favorable to the verdict gives
    equal or nearly equal circumstantial support to a theory of guilt
    and a theory of innocence of the crime charged,” this court must
    reverse the conviction.       Flores-Rivera, 
    56 F.3d at 323
     (alteration
    in original) (internal quotation marks omitted).            Without evidence
    that   pointed     to   the   likelihood      that   the    Vice    Squad    was
    investigating drug crimes, the jury’s verdict cannot be sustained.
    2.
    The Government next asserts that jury reasonably could
    infer that   Mr.    Burgos,    as   an    experienced police       officer   who
    patrolled a high crime area, “was familiar with indicia of drug
    23
    dealing.”52       The Government further contends that, “[g]iven that
    surveillance officers observed drug-related activity occurring at
    G & V, . . . the jury could reasonably have drawn the further
    inference that Burgos knew about or willfully blinded himself to
    the robust drug trafficking operation that Ramos was running
    there.”53
    The Government, however, neither identifies what these
    “indicia of drug dealing” might be, nor points to any evidence of
    such indicia in the record.       Turning to the drug-related activity
    at G & V that was observed by surveillance officers, the brief
    mentions only one instance:         “Ramos walking around in front of
    G & V, apparently engaged in counter-surveillance.”54      Mr. Burgos,
    the Government continues, was on patrol in the area on the day that
    surveillance officers observed this behavior.        Notably, however,
    the Government does not point to any testimony that Mr. Burgos
    passed by G & V in his patrol car while Ramos was engaging in this
    activity, much less that Mr. Burgos saw Ramos or made any contact
    with him.     The Government points to no other drug-related activity
    that was seen by surveillance officers that also was seen by
    Mr. Burgos.       Because the record does not establish that Mr. Burgos
    observed any drug-related activity at G & V, his observations
    52
    Appellee’s Br. 19.
    53
    
    Id.
    54
    
    Id.
     at 18 (citing R.326 at 110-13).
    24
    cannot be        a   basis for establishing       his   knowledge   or   willful
    blindness to such activity.
    3.
    The Government asserts that, based upon “the nature and
    frequency of Burgos’s and Ramos’s interactions, as well as Burgos’s
    police work in an area rife with drug activity, Burgos at the very
    least knew or willfully blinded himself to Ramos’s daily cocaine
    and   Percocet        use.”55   The    evidence    establishes      that,   once
    Mr. Burgos’s brother-in-law left G & V sometime before April 2006,
    Mr. Burgos visited G & V with less frequency.             Ramos estimated that
    Mr. Burgos brought his car in “[n]ot often, once a year, or once a
    month depending on what it was”;56 he stated later in his testimony
    that he thought Mr. Burgos came in “[a]bout three times” after his
    brother-in-law left G & V.57          The Government does not point to any
    other evidence that suggests that Mr. Burgos’s visits were more
    frequent.    Moreover, there is no evidence in the record to suggest
    that Mr. Burgos and Ramos interacted socially with one another.
    The record similarly is devoid of any testimony concerning the
    physical characteristics of regular cocaine or Percocet users and
    whether     Ramos       displayed     any    of   those    characteristics.
    55
    Appellee’s Br. 20 (citations omitted).
    56
    R.327 at 106.
    57
    
    Id.
    25
    Consequently, contrary to the Government’s assertion, this is not
    the type of “close relationship” that “can, as part of a larger
    package of proof, assist in supporting an inference of involvement
    in   illicit   activity.”    Ortiz,   
    966 F.2d at 713
       (involving   a
    defendant who was brother-in-law to another conspirator); United
    States v. DiMarzo, 
    80 F.3d 656
    , 661 (1st Cir. 1996) (holding that,
    “[t]ogether with the incriminating circumstantial evidence,” the
    fact that the defendant, “‘the lookout,’” was brother to the
    “‘pointman’”    “permitted   a   rational   jury   inference    that   [the
    defendant] well knew he was involved in a drug deal”).58
    58
    In a footnote, the Government argues that other aspects of
    Ramos’s testimony, namely his informing “everyone that [he] had the
    protection of a police officer,” id. at 124, support the inference
    that Mr. Burgos was the officer in Ramos’s pocket and that
    Mr. Burgos knew of the drug conspiracy. It acknowledges that Ramos
    also testified that, when he made the statements that he had an
    officer “under [his] wing,” he merely was engaging in braggadocio.
    R.328-1 at 33. The Government argues, however, that the jury was
    free to disregard this latter testimony. See Appellee’s Br. 21
    n.11. Although we agree with the general proposition that “a jury
    has the prerogative to credit some parts of a witness’s testimony
    and disregard other potentially contradictory portions,” United
    States v. Alicea, 
    205 F.3d 480
    , 483 (1st Cir. 2000), the Government
    explicitly credited Ramos’s testimony--that he did not have
    Mr. Burgos under his wing--in its closing argument to the jury:
    And it’s also true that Ramos didn’t have Burgos
    under his wing or under his thumb.     The prosecution
    doesn’t have to prove that in order to prove Burgos’s
    guilty of the crime of conspiracy. The prosecution only
    has to prove that Burgos willfully joined a marijuana
    conspiracy. Burgos didn’t need to be under Ramos’s wing
    or under his thumb in order to have joined the
    conspiracy.
    R.329 at 47-48 (emphasis added).        Consequently, having made the
    (continued...)
    26
    4.
    The    Government   next    argues   that,    based    on   Ramos’s
    questions to Mr. Burgos about police surveillance, it is reasonable
    to conclude that Mr. Burgos knew of, or was willfully blind to,
    Ramos’s drug distribution efforts.            The Government invites the
    court’s attention to two pieces of evidence.          First, in late 2008,
    Ramos noticed that an individual who worked with the “Gang unit”
    was watching the garage through binoculars.59                  When Ramos told
    Mr. Burgos about seeing the officer, Mr. Burgos “told [him] that it
    could be that the place was hot.”60         Ramos understood “hot” to mean
    that the garage was being watched; he told Mr. Burgos, “I’ll be
    careful.”61 Second, on January 14, 2009, Ramos asked Mr. Burgos
    about the white, red and green vehicles that he had noticed
    following   him.      The   relevant   conversation      was    captured   by a
    wiretap, and the transcript reads as follows:
    BURGOS:     [Aside . . . hold on, no . . .] Hello!
    RAMOS:      Tell me, Carlos.
    BURGOS:     How are you? What’s up?
    58
    (...continued)
    argument to the jury that Ramos’s testimony was true, we do not
    believe it should now be heard to suggest that the jury was free to
    discount that testimony.
    59
    R.327 at 114.
    60
    Id. at 115.
    61
    Id. at 116.
    27
    RAMOS:       Tell me, did you find out about that for
    me, or not?
    BURGOS:      Uh . . . yes, but no . . . I don’t know
    if for there . . . there were two.   Uh
    . . . the white one and the red one.
    RAMOS:       Yes, but I saw that one already, there’s
    the white one and a green van, too.
    BURGOS:      [Unintelligible].
    RAMOS:       A green one.        Did you hear?
    BURGOS:      But I don’t know if it is for over there,
    but, uh . . . they’re down there, yes.
    RAMOS:       I know they’re down here.
    BURGOS:      Yes, so let’s take it easy for now.
    RAMOS:       Yes, I know, I know, I know . . . that’s
    why I told you that. I know.
    BURGOS:      Yes, yes, yes . . .
    RAMOS:       Okay.
    BURGOS:      Okay?
    RAMOS:       Okay.
    BURGOS:      Okay. Bye.[62]
    The   Government      asserts    that   this     conversation    supports    the
    conclusion that Mr. Burgos knew of, or was willfully blind to,
    Ramos’s distribution of drugs.               Again, these conversations may
    indicate that Mr. Burgos was aware of, or willfully blind to, some
    criminal    behavior    on   behalf     of   Ramos;   however,   they   do   not
    62
    Id. at 130-31.
    28
    establish     any   knowledge   or   red   flags   with   respect   to   drug
    activity.63
    5.
    To this point, we have addressed the probative value of
    individual pieces of evidence introduced by the Government. It is,
    however, “the cumulative probability of guilt created by all the
    evidence, rather than the probability of guilt created by a single
    piece of evidence, that is the touchstone in deciding whether a
    reasonable jury could find the defendant guilty beyond a reasonable
    doubt.”     United States v. Williams, 
    698 F.3d 374
    , 379 (7th Cir.
    2012).      We find that in evaluating the evidence as a whole,
    however, we must stack inference upon inference in such a way as to
    make the conclusion that Mr. Burgos had knowledge of, or was
    willfully blind to, Ramos’s drug distribution too speculative to
    sustain Mr. Burgos’s conviction.           These inferences include:     (1)
    that, by virtue of his experience as a police officer and his work
    in the Main South area, Mr. Burgos knew the workload distribution
    of the Vice Squad, (2) that, given his friendship with Ramos,
    63
    Tellingly, Ramos was asked on direct examination what he
    understood Mr. Burgos to have meant by “Yes, so let’s take it easy
    for now.” 
    Id. at 132
    . He responded by saying that he understood
    Mr. Burgos to have meant “[t]hat I had to take it easy if I was
    doing something against the law.” 
    Id. at 133
     (emphasis added). In
    other words, Ramos understood Mr. Burgos to be offering advice
    against the possibility that Ramos was involved in “something”
    illegal.
    29
    Mr. Burgos must have known about Ramos’s drug use and, therefore,
    further should have suspected his drug dealing, (3) that, by virtue
    of his patrolling the Main South area, he must have seen indicia of
    drug activity at G & V and (4) that, because Ramos asked if he was
    being watched, and Mr. Burgos confirmed that surveillance officers
    were   in   the   area   and   stated   “let’s     take   it    easy    for    now,”
    Mr. Burgos must have been privy to Ramos’s drug distribution
    activities.       As we concluded in DeLutis, “[t]he piling of these
    unfounded and unsupported inferences on top of each other by the
    government is clearly contrary” to our own case law and that of the
    Supreme Court.      
    722 F.2d at 907
    .
    Indeed, we perceive little to distinguish the type of
    evidence at issue here from that in Pérez-Meléndez, which we
    concluded was insufficient to sustain the conviction for aiding and
    abetting    possession    with   intent      to   distribute        cocaine.      In
    Pérez-Meléndez, based on an anonymous tip, DEA agents approached a
    truck driven by Pérez-Meléndez and, after securing Pérez-Meléndez’s
    consent to search the vehicle, discovered forty kilograms of
    cocaine hidden in pallets containing reams of paper.                   
    599 F.3d at 34
    .    In his statement to the agents, Pérez-Meléndez stated that he
    was an independent truck driver, who had received a telephone call
    from    co-defendant     Rivera-Ríos     that     morning      to   determine    if
    Pérez-Meléndez could work as a truck driver that day.                  
    Id. at 35
    .
    Pérez-Meléndez’s statement was not consistent with respect to (1)
    30
    who had rented the truck, (2) who (he or Rivera-Ríos) had received
    the calls from the individual giving delivery instructions and (3)
    the extent to which he and Rivera-Ríos had worked together in the
    past.   
    Id. at 35-36
    .    Although acknowledging that much of the
    transaction was suspicious, we nevertheless concluded that the
    Government had not met its burden of establishing the elements of
    aiding and abetting possession with intent to distribute narcotics:
    Some of the inferences the district court
    draws    are   certainly   plausible,    but   their
    significance is limited.      A rational factfinder
    could have drawn a plausible inference that
    appellants knew they were involved in an illegal
    activity    because   appellants’   statements   and
    omissions concerning their job and the manner in
    which they were hired for and performed that work
    earlier the same day are suspicious. However, we
    find that a rational factfinder could not have
    concluded beyond a reasonable doubt that appellants
    committed the charged crime because reasonable
    doubt should have remained that (1) appellants knew
    that the precise nature of that activity involved
    controlled    substances    generally   or   cocaine
    specifically and (2) appellants were aware of a
    high probability that illegal drugs were packaged
    within the pallets and consciously and deliberately
    avoided learning of that fact.
    . . . .
    . . . Any conclusion by the jury beyond that,
    specifically imputing to appellants knowledge of or
    willful blindness to the contents of the pallets,
    was the product of pure speculation.       This is
    particularly true when one considers that the
    burden is proof beyond a reasonable doubt.
    The evidence the government presented in this
    case would have been just as consistent with that
    of a case involving the smuggling of contraband
    other than a controlled substance. This contraband
    could plausibly have been other goods, such as
    31
    weapons,   stolen   jewels   or   computer   chips,
    counterfeit currency, diamonds and other precious
    minerals from Africa, cigars from Cuba, fuel, or
    child pornography. Here the government presented
    no evidence at trial that could have led a
    reasonable jury to find beyond a reasonable doubt
    that (1) appellants knew whatever contraband may
    have been present involved a controlled substance
    or (2) appellants were aware of a high probability
    that illegal drugs were packaged within the pallets
    and consciously and deliberately avoided learning
    of that fact.
    
    Id. at 43-46
     (citations omitted).
    We believe the same result obtains here. The combination
    of both the Gang Unit and the Vice Squad surveilling G & V, Ramos’s
    ability to secure items at well-below retail cost for resale to
    Mr. Burgos, and Ramos’s inquiries, on two occasions, concerning
    surveillance, were warning signs that something illegal was afoot
    at G & V.       There simply is no evidence, however, that Mr. Burgos
    knew, or was aware of a high probability, that the illegal actions
    involved drugs.
    On the evidence before us, we cannot say that a rational
    jury    could    have   concluded,   beyond   a   reasonable   doubt,   that
    Mr. Burgos had knowledge of, or was willfully blind to, the
    marijuana    distribution operation being run by Ramos out of G & V.
    Consequently, the Government did not meet its burden of proof with
    respect to the second element of the charged conspiracy, and
    Mr. Burgos’s conviction on that charge must be vacated.64
    64
    Because Mr. Burgos prevailed on his sufficiency of the
    (continued...)
    32
    Conclusion
    For the reasons set forth above, the judgment of the
    district   court   is   reversed,   and   the   case   is   remanded   with
    instructions to enter a judgment of acquittal.
    REVERSED and REMANDED
    64
    (...continued)
    evidence argument concerning the second element of conspiracy, we
    do not reach the issue of the sufficiency of the evidence with
    respect to the third element of conspiracy--Mr. Burgos’s willing
    participation therein--nor do we address any instructional error.
    33