United States v. Latorre , 893 F.3d 744 ( 2018 )


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  •                                                                                      FILED
    United States Court of Appeals
    PUBLISH                                  Tenth Circuit
    UNITED STATES COURT OF APPEALS                             June 21, 2018
    Elisabeth A. Shumaker
    FOR THE TENTH CIRCUIT                               Clerk of Court
    _________________________________
    UNITED STATES OF AMERICA,
    Plaintiff - Appellee,
    v.                                                             No. 17-8066
    BRUCE MICHAEL LATORRE,
    Defendant - Appellant.
    _________________________________
    Appeal from the United States District Court
    for the District of Wyoming
    (D.C. No. 2:17-CR-00024-SWS-1)
    _________________________________
    Catherine M. Young, Student Director (Tom Fleener, Faculty Director, with her on the
    briefs), Defender Aid Program, University of Wyoming, Laramie, Wyoming, appearing
    for Appellant.
    Thomas Szott, Assistant United States Attorney (Mark A. Klaassen, United States
    Attorney, with him on the brief), Office of the United States Attorney for the District of
    Wyoming, Cheyenne, Wyoming, appearing for Appellee.
    _________________________________
    Before BRISCOE, KELLY, and BACHARACH, Circuit Judges.
    _________________________________
    BRISCOE, Circuit Judge.
    _________________________________
    Defendant Bruce M. Latorre appeals his marijuana trafficking convictions.
    Latorre flew a private aircraft from California to New York and was flying back to
    California when police detained him in Wyoming. Several law enforcement agencies—
    Illinois state police, United States Department of Homeland Security, and Wyoming state
    police—cooperated to investigate and then stop Latorre’s aircraft at an airport in
    Wyoming, where they received Latorre’s consent to search his aircraft and found
    $519,935 in cash. A grand jury indicted Latorre on two counts: (1) interstate travel in aid
    of racketeering, in violation of 
    18 U.S.C. § 1952
    (a); and (2) conspiracy to distribute
    marijuana, in violation of 
    21 U.S.C. §§ 846
    , 841(a)(1), 841(b)(1)(C). Latorre moved to
    suppress the evidence from the search of his aircraft, and the district court denied the
    motion. Latorre then entered a conditional guilty plea, reserving the right to appeal the
    denial of his motion to suppress. He now appeals that denial. Exercising jurisdiction
    pursuant to 
    28 U.S.C. § 1291
    , we AFFIRM.
    I
    This case involves a three-day investigation into Latorre’s air travel. Officer1
    Chris Weidler, an Illinois state trooper who supervised the state police’s aviation unit,
    used a radar system to track aircraft flying over Illinois and other parts of the country.
    On December 7, 2015, he observed an aircraft flying through Illinois airspace without an
    active transponder.2 Because the aircraft was flying without an active transponder,
    Officer Weidler did not have any flight information for the aircraft. That the aircraft was
    1
    The various law enforcement officials in this case bear specific titles. To help
    avoid confusion between state and federal officials, we refer to state officials as “Officer”
    and federal officials as “Agent.”
    2
    An active transponder transmits information, such as the aircraft’s location and
    altitude, to air traffic control. At the time, it was unclear to Officer Weidler whether the
    aircraft had a transponder that was broken or turned off, or simply lacked a transponder.
    2
    flying without a transponder raised Officer Weidler’s suspicions, so he continued to
    monitor the aircraft until it appeared to land at an airport in Ohio. Officer Weidler called
    the airport and spoke to an airport employee named John who had just refueled an
    aircraft. John told Officer Weidler that the pilot: paid in cash; claimed to be on a trip to
    visit family in Buffalo, New York; and flew an aircraft with the tail number N511FT.
    Officer Weidler located the aircraft in a Federal Aviation Administration database,
    and discovered it was registered to Latorre in California. Officer Weidler had Officer
    Chad Foster, of the Illinois state police, check Latorre’s criminal record. They learned
    that Latorre had previous arrests for distribution and possession of marijuana, distribution
    of controlled substances, and weapons charges. Officer Foster also called the United
    States Customs Air and Marine Operations Center (“AMOC”), the agency responsible for
    monitoring airspace for criminal activity. AMOC had a record of previous cases
    involving Latorre, and AMOC’s database alerted it whenever Latorre’s aircraft was
    identified on radar. AMOC gave Officer Foster the names and contact information of the
    federal agents who were attached to Latorre’s previous cases, and Officer Foster gave this
    information to Officer Weidler. Officer Weidler continued to monitor Latorre’s aircraft,
    but the aircraft fell off of radar somewhere east of Cleveland. He called the federal
    agents identified by AMOC and provided details of his investigation to Special Agent
    Andrew Stewart, who was with Homeland Security Investigations and based in Nebraska.
    The next day, at approximately 9:00 a.m., Officer Foster called Officer Weidler to
    inform him that an aircraft without an active transponder had just left the Hamburg, New
    York airport, which is just outside of Buffalo. The aircraft was traveling at the same
    3
    speed as Latorre was traveling the day before, but going west this time. Officer Weidler
    found the quick turnaround suspicious for such a long-distance flight, especially
    considering Latorre had told John the purpose of his Buffalo trip was to visit family. The
    aircraft appeared and disappeared from radar several times as it flew through Ohio and
    Indiana into Illinois. The last time Officer Weidler saw the aircraft on his radar that day,
    it was crossing the Mississippi River into Iowa.
    On the third day of the investigation, at approximately 9:00 a.m., Officer Weidler
    observed an aircraft without an active transponder flying near Lincoln, Nebraska,
    traveling at the same speed as Latorre was traveling two days earlier and as the unknown
    aircraft the day prior. The aircraft appeared to land at an airport in Kearney, Nebraska,
    and depart soon thereafter. Officer Weidler called the airport and spoke with multiple
    airport employees. Officer Weidler learned an aircraft with the tail number N115FT—
    the same tail number noted the first day of the investigation and belonging to Latorre—
    had landed at the airport. He also learned the pilot used a credit card belonging to Latorre
    and signed the receipt as Latorre. The pilot told the employees he was heading to
    “Evanston.” Officer Weidler began searching for cities named Evanston between
    Nebraska and California, and found Evanston, Wyoming, which had an airport.
    This focus on the Evanston airport set off a series of communications between law
    enforcement officials. First, Officer Weidler contacted Agent Stewart and updated him
    with the new information. Agent Stewart then contacted Homeland Security
    Investigations Special Agent Mathew Lowry, who was based in Salt Lake City, Utah,
    because he was closer to Evanston, Wyoming. Agent Lowry began the 45-minute drive
    4
    to Evanston with Homeland Security Investigations Special Agent Ryan Weir.
    Anticipating that he would not reach the airport in time to intercept Latorre, Agent Lowry
    called Officer Chad Lichty, a task force officer with the Wyoming Division of Criminal
    Investigation. Agent Lowry asked Officer Lichty to stall Latorre’s aircraft until Officer
    Lowry arrived. Officer Lichty was busy, so he sent Officer Justin Mathson to the airport.
    Dressed in plain clothes, Officer Mathson arrived at the Evanston airport shortly
    before Latorre’s aircraft landed. After refueling, Latorre entered the airport lobby, made
    eye contact with Officer Mathson, and then began walking back to his aircraft. Officer
    Mathson followed Latorre to his plane, where Officer Mathson pulled his shirt and coat
    back to reveal his badge and gun and asked to see Latorre’s aircraft registration and
    pilot’s license. After Officer Mathson had engaged in a brief conversation with Latorre,
    Agents Lowry and Weir arrived.
    Latorre agreed to speak with Agents Lowry and Weir inside the airport lobby.
    Agent Lowry asked Latorre for permission to search his aircraft, and Latorre replied,
    “Yeah, I don’t mind.” App’x, Vol. II at 116. Officer Mathson then searched Latorre’s
    aircraft and found a vacuum-sealed bag containing $519,935 in cash. Agent Lowry
    handcuffed Latorre and read him his Miranda rights. During subsequent interviews,
    Latorre admitted his role in a conspiracy to traffic marijuana to New York and bring
    money back to California. Six months later, on June 8, 2016, Latorre testified before a
    grand jury in Buffalo, New York, providing details concerning the marijuana trafficking
    conspiracy.
    5
    After a Wyoming grand jury indicted Latorre on January 12, 2017, he moved to
    suppress evidence from the search of his aircraft. The district court held an evidentiary
    hearing on Latorre’s motion to suppress and issued an oral ruling a week later, denying
    Latorre’s motion to suppress. The district court concluded: (1) Officer Weidler had
    reasonable suspicion to stop Latorre on the tarmac of the Evanston airport; (2) Officer
    Mathson’s stop was justified under the “collective knowledge” doctrine; (3) Latorre
    consented to the search of his aircraft; and (4) even assuming the original search was
    tainted by an unconstitutional detention, Latorre’s grand jury testimony was freely and
    voluntarily given and untainted by the unconstitutional detention.
    Latorre entered into a conditional guilty plea, reserving his right to appeal the
    denial of his motion to suppress. The district court sentenced him to concurrent terms of
    24 months’ imprisonment on each count, concurrent terms of 3 years of supervised
    release, and financial penalties totaling $2,000. Latorre timely appealed.
    II
    “When reviewing the denial of a motion to suppress, we view the evidence in the
    light most favorable to the government, accept the district court’s findings of fact unless
    they are clearly erroneous, and review de novo the ultimate question of reasonableness
    under the Fourth Amendment.” United States v. Saulsberry, 
    878 F.3d 946
    , 949 (10th Cir.
    2017) (quoting United States v. Lopez, 
    849 F.3d 921
    , 925 (10th Cir. 2017)). We
    conclude Latorre’s constitutional rights were not violated by either Officer Mathson’s
    detention of Latorre or his subsequent search of Latorre’s aircraft. As a result, we affirm
    6
    the district court’s denial of Latorre’s motion to suppress.3
    A.     Whether the detention was constitutional
    The Fourth Amendment protects persons “against unreasonable searches and
    seizures.” U.S. Const. amend. IV. Although an arrest requires probable cause, “a law
    enforcement officer may, in appropriate circumstances and in an appropriate manner,
    approach a person to investigate possible criminal behavior even if he lacks probable
    cause to arrest.” United States v. Whitley, 
    680 F.3d 1227
    , 1232 (10th Cir. 2012). Such
    “[a]n investigatory detention is justified at its inception if the specific and articulable
    facts and rational inferences drawn from those facts give rise to a reasonable suspicion a
    person has or is committing a crime.” United States v. McHugh, 
    639 F.3d 1250
    , 1255
    (10th Cir. 2011) (quotation omitted).
    However, not all police encounters rise to the level of an investigatory detention.
    See United States v. Lambert, 
    46 F.3d 1064
    , 1067 (10th Cir. 1995) (“If a reasonable
    person would feel free to disregard the police and go about his business, the encounter is
    consensual and the Fourth Amendment is not implicated.” (quotation omitted)). But,
    when the police request, obtain, and keep a person’s identification documents, the police
    encounter becomes an investigatory detention. See 
    id. at 1068
     (“[W]hat began as a
    3
    Because we determine that both the stop and subsequent search were
    constitutional, we need not reach the district court’s alternative holding that, assuming the
    original search was tainted by an unconstitutional stop, Latorre’s eventual grand jury
    testimony was freely and voluntarily given and untainted by the unconstitutional
    detention.
    7
    consensual encounter quickly became an investigative detention once the agents received
    Mr. Lambert’s driver’s license and did not return it to him.”).
    Officer Mathson’s encounter with Latorre became an investigatory detention once
    he kept Latorre’s pilot’s license and registration. The government concedes that Officer
    Mathson’s encounter with Latorre was an investigatory detention. Aple. Br. at 14
    (acknowledging “the encounter ripened into investigative detention when Mathson
    continued questioning Latorre without returning his documents”).
    The government argues the investigatory detention was justified because:
    (1) Officer Weidler had reasonable suspicion to stop Latorre, and (2) Officer Weidler’s
    reasonable suspicion was imputed to Officer Mathson through the “collective
    knowledge” doctrine. We address each point in turn. Cf. United States v. Chavez, 
    534 F.3d 1338
    , 1344 (10th Cir. 2008) (“We will analyze this initial issue in two steps, asking
    first whether the DEA task force agents had probable cause to believe [the defendant]’s
    vehicle contained narcotics. . . . Second, we query whether the DEA task force’s probable
    cause could be imputed to [the officer who stopped and searched the defendant’s
    vehicle].”).
    1.      Whether Officer Weidler had reasonable suspicion to stop Latorre
    When conducting a reasonable suspicion analysis, we “must look at the totality of
    the circumstances of each case to see whether the detaining officer has a particularized
    and objective basis for suspecting legal wrongdoing.” United States v. Arvizu, 
    534 U.S. 266
    , 273 (2002) (quotation marks omitted). This approach “precludes [a] divide-and-
    conquer analysis,” where the court views each factor that would support reasonable
    8
    suspicion in isolation. 
    Id. at 274
    . As a whole, reasonable suspicion requires
    “considerably less than proof of wrongdoing by a preponderance of the evidence.”
    United States v. Sokolow, 
    490 U.S. 1
    , 7 (1989). In this analysis, “the officer’s subjective
    motives are irrelevant.” Chavez, 
    534 F.3d at 1344
    . Instead, “we ask whether the facts
    available to the detaining officer, at the time, warranted an officer of reasonable caution
    in believing the action taken was appropriate.” Whitley, 
    680 F.3d at 1234
     (quotation
    omitted). We “need not rule out the possibility of innocent conduct.” Arvizu, 
    534 U.S. at 277
    . “[R]easonable suspicion may exist even if it is more likely than not that the
    individual is not involved in any illegality.” McHugh, 
    639 F.3d at 1256
     (quotation
    omitted). “[W]e defer to the ability of a trained law enforcement officer to distinguish
    between innocent and suspicious actions.” 
    Id.
     (quotation omitted).
    The district court concluded: “Based on Mr. Latorre’s unusual and unsafe flying
    behavior, . . . the cross-country travel and quick turnaround, . . . and history of drug
    trafficking and AMOC’s listing of his aircraft on the list, [Officer] Weidler reasonably
    suspected Latorre was transporting illegal drugs in his airplane.” App’x, Vol. II at 193.
    We agree.
    At least three factors, taken together, support reasonable suspicion here: Latorre’s
    unusual travel itinerary, the lack of an active transponder, and Latorre’s criminal history.
    First, “[w]e have consistently held that implausible travel plans can contribute to
    reasonable suspicion.” United States v. Pettit, 
    785 F.3d 1374
    , 1381 (10th Cir. 2015).
    Latorre flew from California to New York, spent one night in New York, and began the
    two-day flight back to California the next morning. Traveling a long distance, only to
    9
    stay one night at his destination, contributes to reasonable suspicion here just as it has in
    other cases. Cf. Sokolow, 
    490 U.S. at 9
     (“While a trip from Honolulu to Miami, standing
    alone, is not a cause for any sort of suspicion, here there was more: surely few residents
    of Honolulu travel from that city for 20 hours to spend 48 hours in Miami during the
    month of July.”); United States v. Contreras, 
    506 F.3d 1031
    , 1036 (10th Cir. 2007)
    (holding unusual travel supported reasonable suspicion where the defendant drove “more
    than 1,200 miles to see her family, only to turn around within a day and begin the 1,200-
    mile drive back”).
    Second, Latorre embarked on two cross-country flights without an active
    transponder. Officer Weidler found this type of behavior unusual and suspicious because
    transponders add a level of safety for pilots, as they transmit the aircraft’s altitude to air
    traffic control to prevent collisions with other aircraft. App’x, Vol. II at 24, 26. Thus, by
    flying without an active transponder, Latorre was “forfeiting some of the safety . . . that a
    transponder provides” in exchange for “[d]iscreetness, someone not being able to track
    [the] aircraft.” Id. at 48; see also United States v. Rosales, 687 F. App’x 135, 138 (3d
    Cir. 2017) (unpublished) (concluding that “turning off the plane’s transponder” supported
    reasonable suspicion because it showed the defendant “engaged in apparent efforts to
    attempt evasion”). Although this court has not issued a published opinion addressing this
    specific factual scenario—reasonable suspicion arising from flying a plane without an
    active transponder—we have held in other contexts that behavior to avoid detection may
    contribute to reasonable suspicion. See, e.g., United States v. Williams, 
    271 F.3d 1262
    ,
    1269 (10th Cir. 2001) (holding the presence of a two-way, short-range radio in a car
    10
    during a traffic stop supported reasonable suspicion because “cars traveling in tandem
    and transporting drugs sometimes used such radios to avoid detection by law enforcement
    personnel”); United States v. Barbee, 
    968 F.2d 1026
    , 1028–29 (10th Cir. 1992) (“An
    agent’s belief that passengers are slouching down to avoid detection may create
    reasonable suspicion.” (quotation omitted)). That logic applies as well in this case—
    flying without an active transponder contributes to reasonable suspicion because it
    demonstrates an interest in avoiding detection even at the risk of increased danger.
    Third, Officer Foster informed Officer Weidler that Latorre “had previous arrests
    for distribution and possession of marijuana, distribution of controlled substances, and
    weapons charges.” App’x, Vol. II at 37. Officer Weidler also learned that AMOC had
    previous cases involving Latorre and its database was set to alert AMOC if Latorre’s
    aircraft was ever identified on radar.4 Id. at 38. “[W]hen viewed in conjunction with
    other factors that suggest criminal activity may be occurring, criminal history can be a
    powerful contributor to the reasonable suspicion analysis.” United States v. Moore, 
    795 F.3d 1224
    , 1230 (10th Cir. 2015); but see United States v. Santos, 
    403 F.3d 1120
    , 1132
    (10th Cir. 2005) (“To be sure, this Court has held that a prior criminal history is by itself
    insufficient to create reasonable suspicion.”).
    4
    This furthers the import of the second factor. It makes sense that an officer
    would be suspicious of an aircraft that is attempting to be discreet, especially when that
    aircraft is on a watch list that alerts AMOC when the aircraft is identified in flight.
    11
    Latorre argues that “many of the factors relied upon were so innocent or
    susceptible to varying interpretations that they should have been dismissed.”5 Aplt. Br. at
    13 (quotation omitted). But “reasonable suspicion may exist even if it is more likely than
    not that the individual is not involved in any illegality.” McHugh, 
    639 F.3d at 1256
    (quotation omitted). This is because reasonable suspicion requires “considerably less
    than proof of wrongdoing by a preponderance of the evidence.” Sokolow, 
    490 U.S. at 7
    .
    Viewing the totality of the circumstances, Officer Weidler met the “minimal level of
    objective justification for making [a] stop.” 
    Id.
     (quotation omitted).
    2.     Whether the collective knowledge doctrine imputes Officer Weidler’s
    reasonable suspicion to Officer Mathson
    Although Officer Weidler had reasonable suspicion to stop Latorre, Officer
    Weidler did not perform the actual stop—Officer Mathson did. The district court,
    however, concluded that it could rely on the collective knowledge doctrine to impute
    Officer Weidler’s reasonable suspicion to Officer Mathson. We agree.
    “Under the collective knowledge doctrine, the officer who makes a stop or
    conducts a search need not have reasonable suspicion or probable cause.” United States
    v. Pickel, 
    863 F.3d 1240
    , 1249 (10th Cir. 2017). “Instead, the reasonable suspicion or
    probable cause of one officer can be imputed to the acting officer.” 
    Id.
    5
    The district court relied on more factors than the three we highlight here. See,
    e.g., App’x, Vol. II at 193 (relying, in part, on Latorre’s “area of origin” and “unusual
    behavior” at the airports). Because we hold that Officer Weidler had reasonable
    suspicion based on the three factors we describe, we need not determine whether
    additional factors would further support reasonable suspicion.
    12
    There are two types of collective knowledge—horizontal and vertical. “Under the
    horizontal collective knowledge doctrine, a number of individual officers have pieces of
    the probable cause or reasonable suspicion puzzle, but no single officer has sufficient
    information to satisfy the necessary standard.” Whitley, 
    680 F.3d at
    1234 n.3. “Under
    the vertical collective knowledge doctrine, an arrest or stop is justified when an officer
    having probable cause or reasonable suspicion instructs another officer to act, even
    without communicating all of the information necessary to justify the action.” 
    Id. at 1234
    . “Of course, the officer who has probable cause may possess that information as a
    result of communication from other officers. Thus, the ‘horizontal’ and ‘vertical’
    collective knowledge categories are by no means mutually exclusive.” Chavez, 
    534 F.3d at
    1345 n.12. Here, there are four key knowledge relationships: (1) Officer Weidler to
    Agent Stewart; (2) Agent Stewart to Agent Lowry; (3) Agent Lowry to Officer Lichty;
    and (4) Officer Lichty to Officer Mathson.
    Our ruling in United States v. Rodriguez-Rodriguez, 
    550 F.3d 1223
     (10th Cir.
    2008), is instructive regarding the application of the collective knowledge doctrine. In
    Rodriguez-Rodriguez, Officer Marquez observed a brown pickup and a red car driving in
    tandem, and pulled the brown pickup over for a traffic violation. 
    550 F.3d at 1225
    . As
    Officer Marquez approached the brown pickup, he smelled marijuana and saw suspicious
    bundles scattered throughout the vehicle. 
    Id.
     When he called for backup, the driver of
    the brown pickup fled on foot. 
    Id. at 1226
    . Eventually, Officer Arellano arrived in
    response to Officer Marquez’s call for assistance, and Officer Marquez “then told
    Arellano that he had seen a red four-door vehicle with a California license plate and
    13
    tinted windows driving erratically that Marquez concluded was traveling in tandem with
    the brown pickup.” 
    Id. at 1227
    . Officer Arellano then issued an alert for the red car; a
    third officer found and stopped the car. 
    Id.
     at 1227–28.
    We acknowledged that, “[i]n the ordinary case involving reliance on an alert
    issued by an officer with firsthand knowledge, the court analyzes whether the issuing
    officer had reasonable suspicion to support a stop.” 
    Id. at 1227
    . “Here, however, as
    described above, the officer who observed the facts supporting probable cause did not
    himself issue the alert.” 
    Id.
     We concluded that “[t]his minor factual variation need not
    alter our analysis” because “the fact that Arellano rather than Marquez actually sent the
    alert is immaterial.” 
    Id. at 1228
    . As a result, “we need only inquire whether Officer
    Marquez had probable cause to believe that [the driver of the red car] was committing a
    crime.” 
    Id.
    In addition, Rodriguez-Rodriguez characterized its facts as “a case of two
    ‘vertical’ collective knowledge relationships in which the first officer’s conclusion was
    conveyed twice to reach the officer who conducted the stop.” 
    Id.
     at 1228 n.5. Even
    though Officer Marquez did not issue the alert himself, and instead simply told Officer
    Arellano some of the suspicious facts, Rodriguez-Rodriguez was not a horizontal
    collective knowledge case because it “d[id] not involve a . . . relationship in which the
    knowledge of several officers must be aggregated to create probable cause.” Id.; see also
    Chavez, 
    534 F.3d at 1347
     (“Rather than a horizontal pooling of discrete pieces of
    information, one officer here . . . had all the requisite probable cause components; the
    14
    question then is whether that information can be imputed vertically to another officer
    . . . .”).
    Applying those principles here, this case involves multiple vertical collective
    knowledge relationships in which the first officer’s conclusion was conveyed four times
    to reach the officer who conducted the stop. This is because, as in Rodriguez-Rodriguez,
    there is no “pooling” required—Officer Weidler had within his own knowledge sufficient
    facts to support reasonable suspicion. It is true that neither Officer Weidler nor Agent
    Stewart issued an alert or a request to stop Latorre. But just as in Rodrgiuez-Rodriguez,
    “[t]his minor factual variation need not alter our analysis,” 
    550 F.3d at 1228
    .
    Accordingly, this court need only inquire whether Officer Weidler had reasonable
    suspicion to believe that Latorre was committing a crime. Because Officer Weidler did
    have reasonable suspicion, Officer Mathson’s investigatory stop was lawful.
    Latorre argues his stop was not supported by reasonable suspicion because Officer
    Mathson was too far removed from Officer Weidler, who we conclude had reasonable
    suspicion. Our prior collective knowledge cases have involved only one or two vertical
    relationships. This case arguably involves four. Latorre cautions that this level of
    attenuation “would result in a significant expansion of the collective knowledge doctrine
    if applied to impute [Officer] Weidler’s knowledge all the way down to [Officer]
    Mathson.” Aplt. Reply at 4–5.
    But the vertical collective knowledge doctrine only requires “some
    communication between the officer or officers with probable cause and the officer who
    executes the stop or search,” because the communication “confirms that the officers are
    15
    functioning as a team.” Chavez, 
    534 F.3d at
    1347 n.13. Here, there was significant
    communication between Officer Weidler and the law enforcement officials who effected
    the stop and then questioned Latorre. Officer Weidler even stayed on the phone with
    federal agents as Latorre landed at the Evanston airport, updating the agents on Latorre’s
    flight. App’x, Vol. II at 63–64. Although Officer Weidler never directly communicated
    with Officer Mathson, that is not unusual in vertical collective knowledge cases. See,
    e.g., Rodriguez-Rodriguez, 
    550 F.3d at
    1227–28. Nor is it unusual for officers in
    different states to share collective knowledge. See, e.g., Pickel, 863 F.3d at 1250
    (applying the vertical collective knowledge doctrine where two Kansas detectives
    requested Nebraska highway patrol stop a truck, and the Nebraska patrol sergeant then
    conveyed the request to a Nebraska state trooper who performed the stop).
    The facts presented in this case demonstrate that the Illinois state police,
    Homeland Security, and Wyoming state police all functioned as a team to stop and
    question Latorre. This type of interstate and interagency effort is necessary to pursue and
    complete an interstate investigation involving an aircraft in transit—that Officer Weidler
    did not directly communicate all facts supporting reasonable suspicion to Officer
    Mathson does not negate the constitutionality of the stop. See United States v. Hensley,
    
    469 U.S. 221
    , 231 (1985) (“In an era when criminal suspects are increasingly mobile and
    increasingly likely to flee across jurisdictional boundaries, this rule is a matter of
    common sense: it minimizes the volume of information concerning suspects that must be
    transmitted to other jurisdictions and enables police in one jurisdiction to act promptly in
    reliance on information from another jurisdiction.”).
    16
    Latorre’s other arguments fare no better. For example, Latorre argues that
    “Mathson . . . did not believe that he could lawfully detain Mr. Latorre.” Aplt. Br. at 27.
    But we consider the reasonableness of an officer’s actions using an objective standard.
    “The detaining officer’s subjective beliefs and intentions are, quite simply, irrelevant.”
    McHugh, 
    639 F.3d at 1256
     (quotation omitted).
    In addition, Latorre makes a policy argument that condoning the officers’ actions
    here “would encourage an officer who lacks information sufficient to establish reasonable
    suspicion or probable cause to ‘roll the dice and conduct the search anyway, in the hopes
    that uncommunicated information existed’ that would justify it.” Aplt. Br. at 27–28
    (quoting United States v. Massenburg, 
    654 F.3d 480
    , 494 (4th Cir. 2011)). This case
    does not implicate that concern. Officer Mathson was not functioning as a rogue officer
    who was unaware of an ongoing investigation into Latorre. Rather, he was acting in
    direct reliance on information and requests from federal agents, whom he knew gathered
    information from the Illinois state police. And at bottom, Officer Weidler had reasonable
    suspicion, which supported Officer Mathson’s stop of Latorre and the basis for his
    reasonable suspicion had been conveyed to other agents and officers prior to the stop.
    In a prior unpublished decision, a panel of this court endorsed the policy
    justifications behind the vertical collective knowledge doctrine, even in cases where the
    detaining officer knows little or nothing about the facts giving rise to the stop:
    The reasons for the “fellow officer” rule are obvious. Police officers
    do not often have the luxury of time and should be able to
    reasonably rely on the information provided by other officers
    without having to cross-examine them about the foundation for the
    transmitted information. The public benefits as well when police
    17
    officers are allowed to efficiently perform their duties. At the same
    time, the intrusion on a defendant’s personal security is minimal—
    little, if any, additional individual freedom would result from
    requiring officers to set forth their grounds for reasonable suspicion
    or probable cause in their communications with other officers.
    Moreover, defendants . . . still have the opportunity to challenge the
    claimed reasonable suspicion under the Fourth Amendment but must
    properly direct their challenges.
    United States v. Hawley, 660 F. App’x 702, 707 (10th Cir. 2016) (unpublished)
    (quotations and brackets omitted); see id. at 706 (applying the vertical collective
    knowledge doctrine where one officer had reasonable suspicion and instructed another
    officer to perform a stop without telling the officer the facts giving rise to reasonable
    suspicion).
    Because Officer Weidler had reasonable suspicion to stop Latorre, and because
    that reasonable suspicion is imputed to Officer Mathson through the vertical collective
    knowledge doctrine, Officer Mathson’s investigatory stop was lawful.
    B.       Whether the search was constitutional
    We must next determine whether Officer Mathson’s warrantless search of
    Latorre’s plane was constitutional. As a general rule, a “warrantless search . . . is
    presumptively unreasonable, and evidence obtained from such a search is inadmissible,
    subject only to a few carefully established exceptions.” United States v. Harrison, 
    639 F.3d 1273
    , 1278 (10th Cir. 2011). “Voluntary consent to search is one such exception.”
    
    Id.
     The district court found: “During the lawful period of investigative detention, Mr.
    Latorre voluntarily consented to the search of his airplane.” App’x, Vol. II at 196. We
    agree.
    18
    We apply a two-part test for voluntary consent: “(1) the law enforcement officers
    must receive either express or implied consent, and (2) that consent must be freely and
    voluntarily given.” United States v. Jones, 
    701 F.3d 1300
    , 1317 (10th Cir. 2012). Here,
    it is undisputed that Latorre gave the law enforcement officers express consent to search
    his aircraft. See App’x, Vol. II at 116 (Agent Lowry’s testimony); 
    id. at 187
     (district
    court finding Latorre gave oral consent); Aplt. Br. at 35–36 (limiting Latorre’s argument
    to whether consent was voluntarily given). Thus, we turn our focus to the second step.
    “[T]he question whether a consent to a search was in fact ‘voluntary’ or was the
    product of duress or coercion, express or implied, is a question of fact to be determined
    from the totality of all the circumstances.” Schneckloth v. Bustamonte, 
    412 U.S. 218
    , 227
    (1973); see also Harrison, 
    639 F.3d at 1277
     (“Whether consent was voluntarily given is a
    question of fact we review for clear error.”). In the totality-of-the-circumstances
    analysis, we consider:
    physical mistreatment, use of violence, threats, promises,
    inducements, deception, trickery, or an aggressive tone, the physical
    and mental condition and capacity of the defendant, the number of
    officers on the scene, and the display of police weapons. Whether
    an officer reads a defendant his Miranda rights, obtains consent
    pursuant to a claim of lawful authority, or informs a defendant of his
    or her right to refuse consent also are factors to consider in
    determining whether consent given was voluntary under the totality
    of the circumstances.
    Jones, 701 F.3d at 1318 (quoting Harrison, 
    639 F.3d at 1278
    ). “Additionally, an
    individual may voluntarily consent to a search even though he is detained.” United States
    v. Davis, 
    636 F.3d 1281
    , 1293 (10th Cir. 2011). “The detention is only one factor to be
    19
    considered in determining whether consent was voluntarily and freely given based on the
    totality of the circumstances.” Contreras, 
    506 F.3d at 1037
    .
    Latorre argues he did not freely and voluntarily consent to the search of his aircraft
    because: (1) “the agents did not read Mr. Latorre his Miranda rights until they had
    obtained his consent and searched his aircraft,” Aplt. Br. at 35; (2) “the agents did not
    inform him of his right to refuse consent,” 
    id.
     at 35–36; (3) “Agent Mathson also
    displayed his weapon to Mr. Latorre prior to obtaining his consent,” id. at 36; and
    (4) “they only obtained his consent after retaining his documents,” id.
    Those facts do not represent the “totality of the circumstances.” Although Officer
    Mathson had previously pulled his coat behind his badge and firearm to display them to
    Latorre on the tarmac, Officer Mathson never touched his firearm. App’x, Vol. II at 84;
    cf. United States v. Medlin, 
    842 F.2d 1194
    , 198 (10th Cir. 1988) (considering it
    “reasonable” the defendant “would have believed when faced by federal and state officers
    with guns drawn that he had no right to [refuse consent]”). During Latorre’s subsequent
    conversation with Agent Lowry and Agent Weir, which took place in the public lobby of
    an airport, the agents wore street clothes and did not display their weapons. App’x, Vol.
    II at 112–13, 123. Officer Mathson was present, but he stood away at the door. Id. at
    112. Agent Lowry and Agent Weir had a calm conversation with Latorre. Id. at 89.
    They did not threaten him or make any promises to him. Id. at 115. Latorre appeared to
    understand what the agents were talking about. Id. At the time Latorre gave consent, he
    was not handcuffed. Id. at 117. Latorre’s documents were on the chair between him and
    Agent Lowry. Id. at 112, 114. There is no evidence that the agents coerced Latorre’s
    20
    consent to search his plane with a show of authority—in fact, Agent Lowry testified that
    he believed he told Latorre he was free to leave at any time. Id. at 114.
    Under these facts, “a reasonable person would believe he was free to leave or to
    deny the officer’s request to search.” United States v. Guerrero, 
    472 F.3d 784
    , 790 (10th
    Cir. 2007). The district court did not commit clear error when it found Latorre’s consent
    was freely and voluntarily given.
    III
    Because both the investigatory stop and subsequent search of Latorre’s aircraft
    were constitutional, we AFFIRM the denial of Latorre’s motion to suppress evidence.
    21