United States v. Michael P. Haldorson ( 2019 )


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  •                                In the
    United States Court of Appeals
    For the Seventh Circuit
    ____________________
    No. 18-2279
    UNITED STATES OF AMERICA,
    Plaintiff-Appellee,
    v.
    MICHAEL P. HALDORSON,
    Defendant-Appellant.
    ____________________
    Appeal from the United States District Court for the
    Northern District of Illinois, Eastern Division.
    No. 1:15-cr-00623-1 — Matthew F. Kennelly, Judge.
    ____________________
    ARGUED SEPTEMBER 26, 2019 — DECIDED OCTOBER 23, 2019
    ____________________
    Before BAUER, MANION, and ST. EVE, Circuit Judges.
    ST. EVE, Circuit Judge. Michael Haldorson is a self-pro-
    claimed fireworks enthusiast. But he was also a drug dealer.
    Haldorson was arrested on his way to a second controlled buy
    and, along with drugs, officers found three pipe bombs in his
    car. He was charged with several counts related to drugs, ex-
    plosives, and a firearm. Before trial, Haldorson filed several
    motions to suppress evidence, challenging his arrest, the ad-
    missibility of his post-arrest statements, and the searches of
    2                                                  No. 18-2279
    his car, apartment bedroom, and rented storage locker. All
    were denied.
    Haldorson proceeded to trial and a jury convicted him on
    four counts of the seven-count indictment: Count One for dis-
    tribution of cocaine, 21 U.S.C. § 841(a)(1); Count Two for pos-
    session with intent to distribute cocaine, 21 U.S.C.§ 841(a)(1);
    Count Three for possession of MDMA, or ecstasy, and co-
    caine, 21 U.S.C. § 844(a); and Count Four for possession of an
    explosive during the commission of a felony, 21 U.S.C.
    § 844(h)(2). The jury acquitted him on two additional charges
    and the government dismissed another count at trial. The dis-
    trict court later vacated Count Three because it was a lesser-
    included offense of Count Two. The district court sentenced
    Haldorson to a term of imprisonment of 192 months.
    On appeal Haldorson raises three issues. First, Haldorson
    argues that the district court erred in denying the motions to
    suppress the evidence seized from his car and his apartment
    because the officers lacked probable cause to stop and arrest
    him and there were no exigent circumstances to justify the
    warrantless search of his apartment bedroom. Second, he as-
    serts that the jury instructions constructively amended Count
    Four of the indictment, unlawfully carrying an explosive, in
    violation of the Fifth Amendment by permitting the jury to
    convict him on a broader basis than the indictment charged.
    Third, and finally, Haldorson contends that he did not receive
    a fair trial due to a multitude of alleged mistakes and errors
    during the investigation and asks us to vacate his convictions.
    We conclude that probable cause supported the arrest, ex-
    igent circumstances existed for the search of the bedroom, and
    Haldorson had a full and fair opportunity to defend himself
    No. 18-2279                                                  3
    at trial. We, therefore, affirm the district court’s judgment in
    all respects.
    I. The Arrest and Vehicle Search
    We begin, naturally, with Haldorson’s arrest and the re-
    sulting search of his vehicle.
    A. Background
    Haldorson was arrested on June 23, 2015, but his case
    starts a few weeks earlier. Sometime in April or May 2015,
    Haldorson first came on the radar of Officer Thomas Insley
    via a confidential informant. Officer Insley was, at the time, a
    patrol officer with the Village of Rockdale Police Department
    in Illinois. He was also assigned to a specialized narcotics
    unit, the Will County Cooperative Police Assistance Team
    (CPAT)—a collective of officers from local police departments
    under the umbrella of the Illinois State Police—as an Inspec-
    tor. (For ease we will use the title of “Officer” for Insley
    throughout, although he also held the title of “Inspector” dur-
    ing the relevant time period.) CPAT inspectors, in general,
    conduct narcotics investigations, control informants, and go
    undercover. Officer Insley was the primary CPAT investigator
    for Haldorson’s case.
    Officer Insley had been working with this particular con-
    fidential informant for a few months—a detail we will return
    to later—when the informant told Officer Insley that he could
    purchase cocaine from an individual he knew as “Mike
    Jones.” The informant provided Officer Insley with a picture
    of Mike Jones’s vehicle, including the license plate (that read
    4                                                          No. 18-2279
    “MKJNZ”), and his telephone number.1 Officer Insley ran the
    license plate through a law enforcement database and learned
    that it was registered to Haldorson. The vehicle information
    listed on the registration also matched the photograph of Hal-
    dorson’s car—a black Pontiac G8. Officer Insley then showed
    the informant a picture of Haldorson, who the informant
    identified as Mike Jones. At this point, Officer Insley asked the
    informant to set up a deal.
    On June 1, 2015, the informant contacted Officer Insley
    and told him that he could make a buy from Haldorson. Of-
    ficer Insley proceeded to prepare for the controlled purchase
    by providing the informant with funds to buy the narcotics,
    wiring the informant with an audio transmitter and recorder
    to monitor the deal, and setting up a visual surveillance team
    of other CPAT officers. Before heading to the controlled buy,
    Officer Insley also searched the informant and his vehicle to
    make sure that he had no contraband, as is standard in these
    operations.
    Officer Insley followed the confidential informant to a
    Walmart parking lot in Joliet, Illinois, where he was going to
    meet Haldorson, and parked about an aisle over from the in-
    formant. Haldorson then arrived, parked next to the inform-
    ant’s car, and the informant got out of his car and into Hal-
    dorson’s car. At about that same time a customer pulled into
    the lot and parked in between Officer Insley and Haldorson’s
    car, obstructing Officer Insley’s view of the transaction. Not
    1 This Mike Jones’s phone number was not, however, 281-330-8004. For
    those unfamiliar with the reference, Mike Jones is an American rapper
    whose hit single in 2005 included a verse that recited his phone number
    and told listeners to “hit Mike Jones up on the low.” See Mike Jones, Back
    Then, on Who Is Mike Jones? (Warner Bros. Records 2005).
    No. 18-2279                                                     5
    to worry, though, Officer Insley was still able to listen to the
    deal in realtime from the audio transmitter.
    After the deal went down, Officer Insley observed a black
    car matching the description of Haldorson’s car drive away
    and relayed to the rest of the surveillance team that the con-
    trolled buy was successful and to follow Haldorson’s car.
    Meanwhile, Officer Insley followed the informant to a prear-
    ranged location where Officer Insley retrieved the drugs from
    the informant, as well as re-searched the informant and his
    vehicle. The confidential informant had purchased 1.7 grams
    of cocaine from Haldorson in the transaction.
    The surveillance team did not stop Haldorson that even-
    ing; the officers eventually lost him when they got stopped at
    a red light. But the plan was never to stop or arrest Haldorson
    on June 1st because Officer Insley was just beginning his in-
    vestigation into Haldorson. Further, Officer Insley testified
    that if the officers arrested Haldorson immediately after the
    controlled buy, it would have tipped off Haldorson that he
    had been set-up by the confidential informant. Officer Insley
    was using the same informant in other ongoing investigations
    and did not want to burn the informant’s identity.
    From the record it appears that very little was done to ad-
    vance the Haldorson investigation between the June 1st con-
    trolled buy and June 23rd. There were perhaps, though it is
    somewhat unclear, attempts by the confidential informant to
    reach out to Haldorson to set up another controlled buy on
    June 2nd and 5th, but those went nowhere.
    On June 23, 2015, the day at the center of this case, the con-
    fidential informant told Officer Insley that he could arrange
    another drug deal with Haldorson. The plan this time was for
    6                                                            No. 18-2279
    the informant to set it up but for officers to stop Haldorson on
    his way to the deal and arrest him. Stopping and arresting
    Haldorson before the actual drug deal would, once again, pre-
    serve the confidential informant’s anonymity. Eventually
    Haldorson and the informant agreed to meet in the Village of
    Plainfield, Illinois, specifically at Plainfield Central High
    School. Officer Insley then arranged for a Plainfield police of-
    ficer in a marked car to pull Haldorson over.
    Officer Friddle of the Plainfield Police Department posi-
    tioned himself near the high school and waited for Haldorson
    to pass by based on a description of Haldorson’s vehicle that
    CPAT officers provided: black Pontiac G8 with a White Sox
    specialty license plate and red lights in the front grille of the
    car (that may or may not be illuminated). According to Officer
    Friddle, he soon saw a black car approaching with red lights
    in the grille.2 As it got closer, he could see the White Sox spe-
    cialty plates too. Officer Friddle pulled out to follow Haldor-
    son’s car, activated his emergency lights, and pulled Haldor-
    son over at the entrance of Plainfield Central High School. The
    stop was pretextual, and Officer Friddle made up some
    2 Haldorson strongly contested—and still does—the officers’ testimony
    about both the presence of the red lights on his car at the June 1st con-
    trolled buy (Haldorson testified and introduced receipts to demonstrate
    that the lights were not installed until three days later on June 4th) and
    whether the red lights were in fact illuminated when he was pulled over
    on June 23rd. The district court agreed with Haldorson on this point, find-
    ing that although there was a red area in the vent on top of the front hood
    of the vehicle, there were not illuminated red lights. In the end, any dis-
    pute regarding the red grille lights is inconsequential to the contested is-
    sues in this appeal.
    No. 18-2279                                                 7
    excuses to buy time for CPAT officers to arrive on scene and
    take over.
    Officer Mario Marzetta, a police officer with the Plainfield
    Police Department who at the time was also assigned to
    CPAT, arrived at the traffic stop shortly thereafter and ar-
    rested Haldorson. Another officer transported Haldorson to
    the Plainfield Police Department. Officer Marzetta then also
    drove Haldorson’s vehicle to the Plainfield Police Department
    and parked it in the sally port, or the garage at the station,
    where he and another CPAT inspector searched it.
    The officers found numerous drugs—marijuana, cocaine,
    crack cocaine, MDMA or ecstasy, prescription pills, psilocy-
    bin mushrooms—fireworks, and suspected pipe bombs in
    Haldorson’s car. Upon discovering the pipe bombs, the offic-
    ers ceased their search and called in agents from the Bureau
    of Alcohol, Tobacco, Firearms and Explosives (ATF) and the
    Cook County Sheriff’s Police Bomb Squad. The ATF agents
    and bomb technicians removed the explosives from the vehi-
    cle to a safe area and rendered them safe.
    We pause the story here to address Haldorson’s challenge
    to his arrest and the search of his vehicle.
    B. Analysis
    Haldorson was later indicted on several federal charges.
    He thereafter moved to suppress, among other evidence, the
    explosives and narcotics discovered during the vehicle search
    because the officers lacked probable cause to stop and arrest
    him. The district court, after holding a two-day evidentiary
    hearing, denied his motions to suppress. In reviewing the dis-
    trict court’s denial of a motion to suppress, we review ques-
    tions of law de novo and factual findings for clear error.
    8                                                  No. 18-2279
    United States v. Cherry, 
    920 F.3d 1126
    , 1132 (7th Cir. 2019). We
    must defer to credibility determinations that the district court
    made based on the testimony presented to it, absent clear er-
    ror. United States v. Jones, 
    900 F.3d 440
    , 449 (7th Cir. 2018).
    1. Probable cause to arrest Haldorson
    The officers did not have a warrant to arrest Haldorson,
    “but an officer may make a warrantless arrest consistent with
    the Fourth Amendment if there is ‘probable cause to believe
    that a crime has been committed.’” United States v. Daniels,
    
    803 F.3d 335
    , 354 (7th Cir. 2015) (quoting Washington v.
    Haupert, 
    481 F.3d 543
    , 547 (7th Cir. 2007)). “Police officers pos-
    sess probable cause to arrest when the facts and circum-
    stances within their knowledge and of which they have rea-
    sonably trustworthy information are sufficient to warrant a
    prudent person in believing that the suspect has committed
    an offense.” United States v. Howard, 
    883 F.3d 703
    , 707 (7th Cir.
    2018) (quotations omitted). We examine “the totality of the cir-
    cumstances in a common sense manner” to determine
    whether probable cause exists in a given situation. United
    States v. Schaafsma, 
    318 F.3d 718
    , 722 (7th Cir. 2003).
    Haldorson’s primary contention is that the information
    from the controlled buy was too stale three weeks later to sup-
    port probable cause for an arrest. The mere passage of time
    does not necessarily dissipate the probable cause for an arrest.
    It is well-established that “there is no requirement that an of-
    fender be arrested the moment probable cause is established.”
    United States v. Reis, 
    906 F.2d 284
    , 289 (7th Cir. 1990) (citing
    Hoffa v. United States, 
    385 U.S. 293
    , 310 (1966)). In Reis we
    found that an “overnight delay simply has no bearing on the
    existence of probable cause for arrest,” 
    id., and we
    see no rea-
    son to treat reasonably longer delays any different. Indeed,
    No. 18-2279                                                      9
    we have previously held that the defendant’s participation in
    a controlled drug buy a month earlier “provided the police
    with probable cause to arrest [the suspect] which was not ren-
    dered stale by the passage of one month.” United States v.
    Mitchell, 523 F. App’x 411, 414 (7th Cir. 2013) (per curiam).
    Our sister circuits also agree that the passage of time alone
    does not render probable cause to arrest stale. See, e.g., United
    States v. Azor, 
    881 F.3d 1
    , 9 (1st Cir. 2017) (“Our case law
    makes clear that law enforcement is not required to arrest a
    suspect immediately upon development of probable cause.”);
    United States v. Clark, 647 F. App’x 419, 422 (5th Cir. 2016) (per
    curiam) (“[P]robable cause existed to arrest [the defendant]
    because the earlier tip from the confidential informant and the
    controlled purchase [four to six days earlier] provided [the
    police] with facts that would support a reasonable person’s
    belief that an offense had been committed and that the indi-
    vidual arrested was the guilty party.” (cleaned up)); United
    States v. Winchenbach, 
    197 F.3d 548
    , 554 (1st Cir. 1999)
    (“[W]hen probable cause exists, the timing of an arrest is a
    matter that the Constitution almost invariably leaves to police
    discretion.”); United States v. Bizier, 
    111 F.3d 214
    , 220 (1st Cir.
    1997) (holding that “the period of time between the controlled
    buys [—four days after the second controlled buy and less
    than two weeks after the first controlled buy—] and the arrest
    was not so long here as to render the probable cause stale in
    any meaningful temporal sense”); cf. Guadarrama v. United
    States, No. 16-6218, 
    2017 WL 3391683
    , at *2 (6th Cir. Feb. 13,
    2017) (unpublished order) (stating that “[r]easonable jurists
    could not debate th[e] conclusion” that “while information
    used to obtain a search warrant may go stale, the same is not
    true for information underlying an arrest warrant”).
    10                                                 No. 18-2279
    Our facts are nearly identical to those that the Tenth Cir-
    cuit confronted in United States v. Hinson, 
    585 F.3d 1328
    (10th
    Cir. 2009). There, the police arranged for a controlled buy be-
    tween an informant and the defendant at an auto parts store.
    Police surveilled the informant while he drove to the location,
    got into the defendant’s car, and negotiated the purchase of
    methamphetamine. 
    Id. at 1331.
    The police did not immedi-
    ately arrest the defendant, “[a]pparently hoping to investigate
    further.” 
    Id. About a
    month later, the police sought to have the
    informant conduct another controlled buy but the informant
    refused (even though a few days earlier he told the police he
    could set up another deal). Unable to convince the informant
    to cooperate, the police resolved to arrest the defendant. In-
    stead of obtaining an arrest warrant, they decided to simply
    follow his car until he committed a traffic violation and then
    stop and arrest him—which they did. 
    Id. at 1331–32.
    The
    Tenth Circuit held that the police officers had probable cause
    to arrest the defendant “based on the controlled buy they wit-
    nessed a month before his arrest.” 
    Id. at 1334.
    “[T]he passage
    of time did not make that information stale or otherwise de-
    stroy the officers’ probable cause.” 
    Id. There was
    probable cause to arrest Haldorson on June 23,
    2015, based on the June 1, 2015, controlled buy. The facts over-
    whelmingly support this conclusion. The confidential inform-
    ant first provided Officer Insley with Haldorson’s phone
    number and a picture of his black Pontiac G8, including the
    license plate. Officer Insley was able to run the license plate
    through a law enforcement database and trace the car’s regis-
    tration to Haldorson. The informant then positively identified
    a photograph of Haldorson as his drug supplier. But the prob-
    able cause for the arrest was not merely based on a “tip” from
    No. 18-2279                                                               11
    a confidential informant3—that was just the beginning. The
    officers then set up a controlled buy. Multiple officers were
    surveilling the deal and observed Haldorson’s car drive into
    the parking lot at the prearranged location, park next to the
    confidential informant, and the confidential informant get
    into the passenger seat of Haldorson’s car. Although no offic-
    ers witnessed the actual transaction, Officer Insley listened to
    the entire interaction in realtime via the informant’s hidden
    wire. Officer Insley also searched the confidential informant
    and his car both before and after the controlled buy; the only
    drugs he had were the 1.7 grams of cocaine purchased from
    Haldorson during the controlled buy. On this last point, criti-
    cally, the district court found Officer Insley’s testimony cred-
    ible, and we certainly cannot say that that finding was clearly
    erroneous. The passage of three weeks did not render the in-
    formation from the controlled buy stale.
    It is the rare case where “staleness” will be relevant to the
    legality of a warrantless arrest.4 When there is a reasonable
    3 Haldorson makes repeated references to initially undisclosed infor-
    mation regarding the confidential informant’s history—including how he
    came to be an informant, his motivation (was he working for money or
    working off his own case), and the fact that he was arrested on an unre-
    lated incident approximately ten days before the controlled buy. If Officer
    Insley had relied on an affidavit from the confidential informant in an ap-
    plication for a search warrant, the nondisclosure of such credibility infor-
    mation would be relevant to the question of probable cause. United States
    v. Musgraves, 
    831 F.3d 454
    , 460 (7th Cir. 2016). But this case does not in-
    volve simply relying on information from a confidential informant in an
    affidavit.
    4 Conversely, the concept of staleness is generally a “highly relevant” fac-
    tor in applications for search warrants because, unlike arrests, the focus is
    on whether “evidence of a crime will be found in a particular place” and
    12                                                            No. 18-2279
    belief that someone has committed a crime, time by itself does
    not make the existence of that fact any less probable. Cer-
    tainly, “[g]ood police practice often requires postponing an
    arrest, even after probable cause has been established, in or-
    der to place the suspect under surveillance or otherwise de-
    velop further evidence necessary to prove guilt to a jury.”
    United States v. Watson, 
    423 U.S. 411
    , 431 (1976) (Powell, J., con-
    curring). This is not to say that the passage of time can never
    dissipate probable cause to arrest. There could be circum-
    stances in which the subsequent investigation turns up new
    facts or evidence that disprove or discredit the original infor-
    mation. Cf. 
    id. at 432
    n.5. We simply do not have those facts
    here and thus do not need to address if or when probable
    cause to arrest may become stale.
    The information provided by the confidential informant
    and the June 1st controlled buy provided probable cause to
    arrest Haldorson on June 23, 2015.
    2. Vehicle search
    Haldorson makes passing references to the search of his
    car but does not meaningfully contest the district court’s rul-
    ing that the evidence would have been inevitably discovered.
    In any event, Haldorson’s challenge fails. The inevitable dis-
    covery doctrine provides that illegally obtained evidence will
    not be excluded if the government “can establish by a prepon-
    derance of the evidence that the information ultimately or in-
    evitably would have been discovered by lawful means.” Nix
    v. Williams, 
    467 U.S. 431
    , 444 (1984). Once Haldorson was law-
    fully arrested, his “car could not be left unattended
    often involve a search for perishable or transportable objects, like drugs or
    guns. United States v. Bradford, 
    905 F.3d 497
    , 503–04 (7th Cir. 2018).
    No. 18-2279                                                     13
    indefinitely” at the entrance of a public high school. United
    States v. Simms, 
    626 F.3d 966
    , 971 (7th Cir. 2010); see also United
    States v. Stotler, 
    591 F.3d 935
    , 940 (7th Cir. 2010) (“[O]bviously,
    the arresting officers would not have allowed the truck to just
    sit on the street after [the arrestee] was carted away.”). The
    police officers would have towed his vehicle to the police sta-
    tion and conducted an inventory search of the vehicle per es-
    tablished Plainfield Police Department procedures. “The
    drugs [and explosives], therefore, inevitably would have been
    discovered during an inventory search.” 
    Cherry, 920 F.3d at 1140
    .
    We affirm the denial of Haldorson’s motion to suppress
    the evidence seized from his vehicle.
    II. The Apartment Search
    We pick up the facts where we left off, with Haldorson at
    the Plainfield Police Department and the officers’ discovery of
    drugs and explosives in his car.
    A. Background
    Officers interviewed Haldorson multiple times the even-
    ing of his arrest and carrying over into the early morning
    hours of the next day, June 24, 2015. The officers read Haldor-
    son his Miranda rights on at least two separate occasions over
    the course of the interviews. After finding pipe bombs in Hal-
    dorson’s car, the CPAT officers and ATF agents were particu-
    larly concerned that Haldorson had stored additional explo-
    sive materials at his residence. When officers initially asked
    him for his current address, Haldorson told the officers that
    he was homeless. Officer Insley believed that Haldorson lived
    in downtown Plainfield, and specifically on or around Lock-
    port Street, based on information he had previously gathered
    14                                                No. 18-2279
    and because officers had seen Haldorson’s car parked on that
    street during the investigation. Haldorson told them that he
    was dating a woman over there but denied living in the
    downtown Plainfield area. He eventually claimed that he
    lived in Joliet at his parents’ house and provided an address.
    Asked if there were any additional explosives at that home,
    Haldorson responded that there could be.
    With this information, CPAT officers and ATF agents left
    the police station and went to the Joliet address. They arrived
    at Haldorson’s parents’ home at approximately 2:45 a.m. on
    June 24, 2015. Haldorson’s parents gave the officers consent
    to search Haldorson’s room, which revealed narcotics-related
    items but no explosives. After speaking with Haldorson’s fa-
    ther, the officers learned that Haldorson did in fact reside at
    an apartment in downtown Plainfield, on Lockport Street. His
    father did not know the exact address but gave a general de-
    scription of the area and Haldorson’s apartment. Officers im-
    mediately went to that location.
    Now on Lockport Street, at approximately four o’clock in
    the morning, the officers—without a precise address—pro-
    ceeded to knock on the street-level doors of the buildings (the
    buildings were retail business on the first floor and apart-
    ments on the second), and eventually located and gained ac-
    cess to Haldorson’s apartment building.
    Once inside the apartment building, the officers knocked
    on Haldorson’s unit’s front door. A woman answered the
    door (and gave the same name as the name of the woman Hal-
    dorson said he was dating), who told the officers that Haldor-
    son lived there. She gave the officers consent to enter and
    search the common areas of the apartment, and even signed a
    written consent form. Haldorson had a separate bedroom in
    No. 18-2279                                                 15
    the apartment, which was locked. The officers used Haldor-
    son’s keys that were taken during his arrest to open his bed-
    room door. According to the Plainfield police sergeant on the
    scene, the officers made the decision to enter Haldorson’s
    locked bedroom to search for explosives because they were
    concerned for the safety of his roommate and the other resi-
    dents and businesses on Lockport Street if there were, indeed,
    explosives in the bedroom. The officers did not have a search
    warrant at the time.
    In Haldorson’s bedroom officers founds fireworks and ex-
    plosives. They removed the explosives from the bedroom and
    secured them in a steel box on ATF trucks. At that moment
    the officers did not seize anything else from Haldorson’s bed-
    room except for the explosives. In fact, the officers testified
    that they only conducted a “plain view” search for explosives
    and then stopped their search. Instead, the officers then ap-
    plied for and received a search warrant for the apartment. The
    second search did not produce any additional explosives, but
    officers did seize narcotics-related items and two laptop com-
    puters.
    Later that same day, armed with the search warrant, offic-
    ers also searched two storage lockers that belonged to Haldor-
    son. They did not find any explosives or narcotics in one of
    the lockers, but seized PVC pipe, multiple low explosive pow-
    der canisters, fireworks, and a handgun and ammunition
    from the second locker.
    We break from recounting the facts again to tackle the le-
    gality of the bedroom search.
    16                                                   No. 18-2279
    B. Analysis
    When the police officers entered Haldorson’s bedroom
    and searched it for explosives, they did not have a search war-
    rant or consent. “Warrantless searches and seizures within a
    home are considered presumptively unreasonable and a vio-
    lation of the Fourth Amendment.” United States v. Huddleston,
    
    593 F.3d 596
    , 600 (7th Cir. 2010). There are, however, “certain
    narrowly proscribed exceptions.” United States v. Bell,
    
    500 F.3d 609
    , 612 (7th Cir. 2007). One such exception is where
    “exigent circumstances require officers to ‘step in to prevent
    serious injury and restore order.’” 
    Huddleston, 593 F.3d at 600
    (quoting 
    Bell, 500 F.3d at 612
    ). Under the exigent circum-
    stances exception, “a warrantless entry into a dwelling may
    be lawful when there is a pressing need for the police to enter
    but no time for them to secure a warrant.” Sutterfield v. City of
    Milwaukee, 
    751 F.3d 542
    , 557 (7th Cir. 2014). The test is
    whether “an officer had an objectively ‘reasonable belief that
    there was a compelling need to act and no time to obtain a
    warrant.’” 
    Huddleston, 593 F.3d at 600
    (quoting 
    Bell, 500 F.3d at 613
    ). The existence of exigent circumstances is a mixed
    question of fact and law that we review de novo. 
    Id. We still
    review the district court’s factual findings for clear error.
    United States v. Delgado, 
    701 F.3d 1161
    , 1164 (7th Cir. 2012).
    The exigent circumstances exception is “frequently in-
    voked in cases involving explosives.” United States v. Witzlib,
    
    796 F.3d 799
    , 802 (7th Cir. 2015) (collecting cases and citing,
    for example, United States v. Infante, 
    701 F.3d 386
    , 393–94 (1st
    Cir. 2012); Armijo ex rel. Armijo Sanchez v. Peterson, 
    601 F.3d 1065
    , 1071–73 (10th Cir. 2010); United States v. Lindsey,
    
    877 F.2d 777
    , 781–82 (9th Cir. 1989); United States v. Al–Az-
    zawy, 
    784 F.2d 890
    , 894 (9th Cir. 1985)). Explosives are, by their
    No. 18-2279                                                17
    very nature, inherently dangerous. Homemade explosive de-
    vices even more so because the persons manufacturing them
    often lack the needed technical knowledge and skills. There-
    fore, even though Haldorson enjoyed a strong expectation of
    privacy in his locked bedroom, that expectation must be bal-
    anced against the need to protect the public from serious
    harm where explosive materials may be present in a residen-
    tial complex with close neighbors. United States v. Boettger,
    
    71 F.3d 1410
    , 1414 (8th Cir. 1995) (“[Privacy] expectations
    must be lowered where a resident admits working with ex-
    plosive materials in an apartment complex with close neigh-
    bors.”); see Michigan v. Clifford, 
    464 U.S. 287
    , 297 n.8 (1984)
    (careful “not to suggest that individual expectations of pri-
    vacy may prevail over interests of public safety”).
    The following objective facts, found by the district court
    and not clearly erroneous, were known to the officers before
    they entered into Haldorson’s bedroom: Explosive materials,
    including pipe bombs, were found in Haldorson’s car; pipe
    bombs, according to the Cook County Sheriff’s Police Bomb
    Squad and ATF agents, are very volatile and dangerous; Hal-
    dorson admitted that more explosives could be at his resi-
    dence; Haldorson falsely told officers that he lived at his par-
    ents’ house, and a search of that house uncovered no explo-
    sives; and Haldorson actually resided at an apartment in
    downtown Plainfield, which was surrounded by residential
    neighbors and businesses. Moreover, the district court found
    that an ATF agent credibly testified that there was a “legiti-
    mate concern” that other homemade explosives were “poten-
    tially unstable and therefore dangerous to others.” Based on
    these facts, the officers reasonably believed that there was a
    justifiable and urgent need to act to prevent serious harm.
    18                                                            No. 18-2279
    Because of the acute concern and the hour at which the
    officers and agents were urgently proceeding, around three
    and four o’clock in the morning, there was no time to obtain
    a warrant.
    Haldorson relies on the fact that the officers and agents
    only conducted a plain view search for explosives in his bed-
    room to question their belief that the explosives posed an im-
    mediate threat. But, as the district court noted, law enforce-
    ment officers took additional steps consistent with their belief
    that the explosives posed an immediate threat, including
    clearing Haldorson’s girlfriend from the apartment. Further,
    contrary to Haldorson’s contention that their “true aim and
    intent” was to conduct a warrantless search, the fact that the
    officers only did a plain view search shows that the expressed
    concern was not simply pretext for searching for and gather-
    ing evidence of criminal activity. See 
    Clifford, 464 U.S. at 292
    .
    The search did not exceed the scope of the exigency. See
    United States v. Salava, 
    978 F.2d 320
    , 325 (7th Cir. 1992) (“The
    ensuing search … was appropriately limited to the [exigent]
    circumstances that justified it.”).
    Haldorson also emphasizes that he was in custody and
    therefore “any alleged explosive materials were stable and in-
    ert.” The opposite is true—homemade pipe bombs, and other
    improvised explosive devices, are unstable.5 An ATF agent,
    5 It is for this same reason that we find unpersuasive Haldorson’s reliance
    on United States v. Yengel, 
    711 F.3d 392
    (4th Cir. 2013), which involved a
    warrantless search based on the possible threat of a grenade inside a
    home. Upon learning of the possible existence of a grenade, however, the
    officer did not call for the assistance of explosive experts, or even “remove
    the sleeping child from the room located directly next to the room where
    the ‘grenade’ was allegedly stored.” 
    Id. at 395.
    The officer’s “own actions
    belie[d]” the argument that there were exigent circumstances. 
    Id. at 398.
    No. 18-2279                                                                19
    who has experience and expertise with explosives, credibly
    testified to this below.6 In short, the officers reasonably be-
    lieved that the homemade pipe bombs posed an immediate
    threat to public safety.
    Given the facts and information known at the time of the
    search, “from the perspective of the officers at the scene,”
    
    Huddleston, 593 F.3d at 600
    , there was a legitimate concern
    that other homemade explosive devices were in Haldorson’s
    bedroom that were potentially unstable and therefore danger-
    ous to others. The warrantless search fell within the exigent
    circumstances exception to the Fourth Amendment’s warrant
    requirement.
    III. Constructive Amendment to the Indictment
    Back to the facts, and with the pretrial motions and evi-
    dentiary issues on appeal taken care of, we turn to Haldor-
    son’s objections to the jury instructions.
    Haldorson challenges the instructions to the jury on Count
    Four as a constructive amendment to the indictment. Count
    The officer acted with no level of urgency. Importantly, and distinct from
    our circumstances, the Fourth Circuit noted that there was “no indication
    that there might be other, more unstable explosives, inside as well.” 
    Id. (em- phasis
    added).
    6 See also Fact Sheet–Illegal Explosive Devices, Bureau of Alcohol, Tobacco,
    Firearms and Explosives (May 2019), https://www.atf.gov/resource-cen-
    ter/fact-sheet/fact-sheet-illegal-explosive-devices (“Illegal explosive de-
    vices … are typically extremely sensitive to heat, shock, electrostatic dis-
    charge and friction that may initiate, unexpectedly causing serious injury
    or death. The risks associated with these devices are further compounded
    because the persons manufacturing, transporting and using these devices
    often do not have the knowledge, skills and experience required for such
    activities.”).
    20                                                    No. 18-2279
    Four of the indictment charged, in pertinent part, that Haldor-
    son “unlawfully carried an explosive, namely, smokeless
    powder, during the commission of a felony … .” Because the
    indictment charged him with carrying a specific object—
    smokeless powder—the jury could only convict if it found be-
    yond a reasonable doubt that Haldorson carried smokeless
    powder, not just any explosive material. Haldorson argues
    that the jury instructions on Count Four unconstitutionally
    broadened the bases of conviction by permitting the jury to
    convict if they found he carried any explosive. This is a ques-
    tion of law that we review de novo. United States v. Mitov,
    
    460 F.3d 901
    , 906 (7th Cir. 2006).
    The Fifth Amendment provides that “[n]o person shall be
    held to answer for a capital, or otherwise infamous crime, un-
    less on a presentment or indictment of a Grand Jury.” U.S.
    Const. amend. V. Only the grand jury can amend the indict-
    ment to broaden it. Stirone v. United States, 
    361 U.S. 212
    , 216
    (1960); United States v. Pierson, 
    925 F.3d 913
    , 919 (7th Cir. 2019).
    “This rule both enforces the Fifth Amendment and helps to
    ensure that a defendant is given reasonable notice of the alle-
    gations against him so that he may best prepare a defense.”
    
    Pierson, 925 F.3d at 919
    . A constructive amendment “occurs
    when either the government (usually during its presentation
    of evidence and/or its argument), the court (usually through
    its instructions to the jury), or both, broadens the possible ba-
    ses for conviction beyond those presented by the grand jury.”
    United States v. Cusimano, 
    148 F.3d 824
    , 829 (7th Cir. 1998).
    The statute under which Haldorson was charged,
    18 U.S.C. § 844(h)(2), does not require a specific type of explo-
    sive as an element—it criminalizes “carr[ying] an explosive
    during the commission of any felony” (subject only to the
    No. 18-2279                                                 21
    definition of “explosive” in 18 U.S.C. § 841(d)). But the gov-
    ernment narrowed the charge against Haldorson by including
    the specific language “namely, smokeless powder” in the in-
    dictment. “Specific language in an indictment that provides
    detail beyond the general elements of the crime makes the
    specified detail essential to the charged crime and must,
    therefore, be proven beyond a reasonable doubt.” 
    Pierson, 925 F.3d at 920
    .
    The district court instructed the jury on Count Four as fol-
    lows:
    In order for you to find the defendant guilty of
    the charge of carrying an explosive during the
    commission of a felony as alleged in Count
    Four, the government must prove both of the
    following elements beyond a reasonable doubt:
    …
    2. The defendant knowingly carried an explo-
    sive, namely, smokeless powder, during the
    commission of that crime [in element 1 of the in-
    struction] … .
    The jury instruction also included the specific language
    “namely, smokeless powder.” It was added during the final
    jury instructions conference at the insistence of Haldorson.
    The jury instruction for Count Four and Count Four of the
    indictment both included the identical specific language re-
    garding smokeless powder. The instruction thus required the
    jury to find, beyond a reasonable doubt, that Haldorson
    knowingly carried an explosive and that that explosive was
    smokeless powder, just as Count Four charged.
    22                                                  No. 18-2279
    This is unlike our decisions in Pierson and Leichtnam,
    which Haldorson attempts to rely on for support. In both
    cases, the indictment narrowed the bases of conviction by
    naming a particular firearm that the defendant was charged
    with. 
    Pierson, 925 F.3d at 920
    ; United States v. Leichtnam,
    
    948 F.2d 370
    , 374 (7th Cir. 1991). And in both cases, the corre-
    sponding jury instruction failed to specify the exact gun
    charged, while at the same time evidence of additional non-
    indicted guns were presented at trial. “[T]his combination of
    the evidence and untailored jury instructions added up to a
    constructive amendment.” 
    Pierson, 925 F.3d at 920
    . This is not
    our case. The jury instruction was tailored to the specifics of
    the indictment and did not permit the jury to convict Haldor-
    son based on non-indicted explosives. No constructive
    amendment of the indictment occurred.
    Finally, Haldorson makes a passing suggestion that there
    is “another independent problem” with the jury instructions
    on Count Four: the instruction contained “vastly more lan-
    guage” than the elements of the offense. According to Haldor-
    son, the language was unnecessary, irrelevant, and suggestive
    of the facts in evidence.
    On a challenge to a jury instruction, our review is twofold.
    First, “we review de novo whether the jury instructions accu-
    rately summarize the law, but give the district court substan-
    tial discretion to formulate the instructions provided that the
    instructions represent a complete and correct statement of the
    law.” United States v. Bonin, 
    932 F.3d 523
    , 537–38 (7th Cir.
    2019). If the instruction is legally accurate, in the second step
    we then “review the district court’s phrasing of the instruc-
    tions for abuse of discretion.” 
    Id. No. 18-2279
                                                      23
    The district court further instructed the jury that:
    The explosive does not have to be related to the
    other crime. A person carries an explosive if he
    knowingly transports it on his person or in a ve-
    hicle or container. A person may carry an explo-
    sive even if it is not immediately accessible be-
    cause it is in another area of a vehicle. The term
    “during” means at any point within the conduct
    charged in Count Two and Count Three.
    The first and fourth sentences accurately summarize the ap-
    plicable law and Supreme Court precedent. In Ressam, the
    Court held that 18 U.S.C. § 844(h)(2) does not require a rela-
    tionship between the explosive carried and the underlying fel-
    ony, and that “during” denotes a straightforward temporal
    link. United States v. Ressam, 
    553 U.S. 272
    , 274 (2008).
    The second and third sentences above are strictly defini-
    tional. There is no suggestion that they are incorrect, misstate-
    ments, or could not have alternatively been included in the
    separate “Definitions” instruction that the court provided to
    the jurors. Because the instruction on Count Four accurately
    stated the law, it was not an abuse of discretion to provide the
    additional language to the jury.
    IV. Mistakes During the Police Investigation
    As a last resort, Haldorson asks this court to vacate his
    convictions because the convictions are “plagued by con-
    cealed material information, false and misleading reports,
    perjured testimony, an unlawful recording, scant evidence,
    contaminated evidence, [and] evidence disappearing from
    the evidence vault.” The crux of his argument on appeal is
    that the cumulative effects of the perceived mistakes and
    24                                                            No. 18-2279
    violations during the investigation deprived him of his Fifth
    and Sixth Amendment rights to a fair trial.7
    The problem for Haldorson is that all of the asserted errors
    he claims infected his trial were known to him before trial and
    he made extensive use of them at trial on cross-examination.
    Each and every misstep that the officers and the federal agents
    allegedly made along the way came out at trial. In fact, in clos-
    ing arguments, Haldorson essentially argued to the jury what
    he now argues on appeal.
    Much of Haldorson’s argument can be disposed of with
    that, but we conclude with a brief comment on one of the spe-
    cific allegations concerning irregularities with Officer Insley’s
    handling of the confidential informant. The primary issue is
    that Officer Insley did not disclose the informant’s arrest that
    occurred ten days before the controlled buy to his police su-
    pervisors or to the prosecutors. A confidential informant’s
    personal and criminal history is material information and is
    often critical to different stages of an investigation or prose-
    cution. When the police seek a search warrant based in part
    on an informant, for example, the omission of adverse infor-
    mation may impair the neutral role of the magistrate deciding
    whether to issue the warrant. E.g., United States v. Glover,
    
    755 F.3d 811
    , 817 (7th Cir. 2014). Similarly, the government
    7 Importantly, although his argument is framed similarly, Haldorson’s ar-
    gument is not one of cumulative error because he does not allege that any
    errors were committed in the course of the trial. See United States v. Mar-
    chan, 
    935 F.3d 540
    , 549 (7th Cir. 2019) (“To establish cumulative error a
    defendant must show that (1) at least two errors were committed in the
    course of the trial; [and] (2) considered together along with the entire rec-
    ord, the multiple errors so infected the jury’s deliberation that they denied
    the petitioner a fundamentally fair trial.”).
    No. 18-2279                                                   25
    would have to disclose that same adverse information to the
    defense as exculpatory material under Brady v. Maryland, 
    373 U.S. 83
    (1963), and Giglio v. United States, 
    405 U.S. 150
    (1972).
    In this particular case, Officer Insley’s lack of disclosure did
    not taint any later stages of the investigation or prosecution.
    No warrants, evidence, or testimony relied on the informant’s
    credibility.
    Mistakes were made during the police investigation of
    Haldorson. The government readily concedes as much. But
    those mistakes did not deprive Haldorson of his constitu-
    tional rights. Haldorson had a full and complete opportunity
    to defend himself against the government’s charges and re-
    ceived a fair trial.
    AFFIRMED.