Appellant Larry Donnell George appeals his convictions of three counts of armed bank robbery, in violation of 18 U.S.C. § 2113(c)(d) (1982), and three corresponding counts of using and carrying a firearm during the course of a crime of violence, in violation of 18 U.S.C. § 924(c) (1982). The jury found Appellant guilty based on physical evidence of his fingerprints at several of the banks and on a money bag found in his automobile; a large amount of cash, including bait bills, found in his automobile; a security guard’s handgun found in his automobile; a .25 caliber handgun found in his apartment; $2,800 found in his apartment; and witnesses from each of the banks who identified Appellant from pho-tospreads and in person as the perpetrator of the crimes.
Appellant offers three bases for reversing his convictions. First, Appellant claims that the district court erred when it denied his motion to suppress evidence seized from his apartment and automobile. Second, Appellant claims that the district court abused its discretion when is quashed a subpoena that Appellant had issued to the FBI. And third, Appellant claims that the district court abused its discretion when it deemed his case closed after he failed to present any further witnesses. We have appellate jurisdiction pursuant to 28 U.S.C. § 1291 (1982) and, because we find the evidence overwhelming and the district court’s conduct proper, we affirm.
I
Appellant’s main contention on appeal is that the district court erred when it denied his motion to suppress evidence that had been seized from his apartment and automobile. The principal adverse witnesses at Appellant’s suppression hearing were Officers Harry Kartinen and Robert Fowks of the Long Beach Police Department who each testified to the following sequence of events. On December 24, 1986, at approximately 1:00 p.m., Officer Kartinen participated in the investigation of an armed robbery that had just occurred at the Security Pacific National Bank in the City of Long Beach. While there he interviewed witnesses who described the assailant and explained to him that, before exiting, the assailant had told everyone to tell the police that the “Orange County Kid” had been there, and “Merry Christmas.” About 1:30 p.m., while continuing the investigation, Officer Kartinen received a phone call from Federal Agent Kevin Adley, who Kartinen had known and worked with for nearly twenty years. Agent Adley explained that he had been investigating bank robberies in which Appellant was the leading suspect. After exchanging information Officer Kartinen and Agent Adley agreed that the robbery suspect matched Appellant’s description and his modus operandi. Officer Kartinen then spoke with Officer Fowks, who had recently arrived at the bank, giving him a description of Appellant and the two vehicles that he was known to have been driving. Officer Fowks was then dispatched to Appellant’s address to conduct surveillance.
Less than one hour later Officer Karti-nen received a radio message that Agent Adley wanted to speak with him again. Officer Kartinen then contacted Agent Ad-ley who explained that witnesses’ descriptions of an assailant of a second bank robbery, which had just taken place at the Bank of America in Orange County, matched Appellant’s description and, further, that the perpetrator had disarmed a uniformed security guard and shot him. Agent Adley also explained that Appellant was currently on probation for convictions of bank robberies that had taken place several years before and that Appellant’s parole officer, after viewing surveillance photographs, identified him as the perpe *1410 trator of a bank robbery that had occurred earlier that month. Agent Adley noted as well that Appellant had a history of violent behavior during his bank robberies.
Officer Kartinen then joined forces with Officer Fowks to conduct surveillance of Appellant’s apartment. Other officers also joined the stakeout, positioning themselves so that neither team viewed the same area. While waiting there Officer Kartinen once again received a radio message to contact Agent Adley. Officers Kartinen and Fowks then left the area to find a telephone. During his conversation with Agent Adley Officer Kartinen was told that witnesses at the Bank of America had positively identified Appellant as the robber. When Officers Kartinen and Fowks returned to Appellant’s home at approximately 3:00 p.m., they noticed that his car had arrived out front, still warm from being recently driven, and that, although the screen door to his apartment remained closed, the front door was open. Officer Kartinen then directed the stakeout team to prepare to enter Appellant’s apartment.
Without knocking or announcing their presence, Officers Kartinen and Fowks entered Appellant’s apartment through the opened front door. When Officer Kartinen looked into the northwest bedroom he noticed a man, who he recognized as Appellant from photographs hanging on the wall, holding a black object in his hand. Officer Kartinen yelled “hold it,” but when Appellant turned away Officer Kartinen fired his shotgun, hitting Appellant in the right arm and throwing him backward onto the bed. Fearing that Appellant was lying on a gun, Officer Kartinen asked Appellant several times where the gun was. Appellant finally pointed to the top drawer of a dresser next to the bed. Officers Kartinen and Fowks looked inside the drawer and noticed a .25 caliber pistol.
Appellant was then removed to a nearby hospital for treatment of the gunshot wound. Doctors working in the emergency room performed a brief neurological exam, determining that Appellant was oriented and aware of the situation, and that he was speaking and responding appropriately. Shortly after that, sometime around 4:00 p.m., Federal Agent James Leverick advised Appellant of his rights and then obtained Appellant’s oral and written 1 consent to a search of his residence and automobile. Appellant’s wife, who returned home sometime around 5:00 p.m., was met by Long Beach police officers and federal agents. They asked, and received, her consent to the search as well. According to Officers Fowks and Kartinen, the search of Appellant’s apartment and automobile proceeded after that time. 2 Inside Appellant’s automobile federal agents found the Bank of America security guard’s handgun, five live .38 caliber rounds of ammunition, a box of .25 caliber bullets, and bait bills among $32,116, which was the exact amount of money stolen from the Bank of America. Inside Appellant’s apartment Long Beach police officers found the .25 caliber handgun in Appellant’s bedroom dresser and over $2,800 in currency.
The district court, after hearing this testimony, ruled against Appellant’s motion to suppress evidence seized from his apartment and automobile. The district court reasoned that the initial warrantless and unannounced entry into Appellant’s apartment to arrest him was justified by four exigencies, specifically, safety of the officers and public, hot pursuit of a suspect, prevention of the destruction of evidence, and prevention of escape. Moreover, the district court concluded that the subsequent warrantless search of Appellant’s apartment was justified by both Appellant’s and his wife’s consent. Finally, the district court concluded that the warrant-less search of the automobile was justified, in addition to Appellant’s and his wife’s *1411 consent, by probable cause that it contained contraband.
II
Appellant disputes the factual and legal basis of each of the district court’s conclusions. Specifically, Appellant argues that neither he nor his wife effectively consented to the searches and, further, that the officers did not have probable cause to believe that his automobile contained contraband. We review the district court’s findings of facts and determinations of credibility for clear error, but its ultimate legal conclusions of probable cause and exigent circumstances are reviewed de novo.
United States v. Klein,
A
We consider first Appellant’s argument that his own consent to the search of his apartment and automobile was ineffective. Appellant readily admits that his signature appears on a consent to search form. Overwhelming evidence also indicates that his signature was obtained only after he was advised of his rights and told that without his consent a warrant would be needed. Appellant argues nonetheless that his consent was involuntarily given, asserting that when he signed the consent form he believed he was signing a waiver of blood transfusion. We cannot conclude on the evidence before us, however, that the district court clearly erred when it rejected this assertion of fact. The joint testimony of a hospital employee and the treating physician confirms that, despite his serious injury, Appellant was able to understand his rights and freely respond to the Agent’s request for his consent. We are guided, then, by our previous decision in
United States v. Martin,
Appellant argues alternatively that even if his consent was voluntary it nevertheless was ineffective because it was not sufficiently attenuated from the taint of his illegal arrest. This argument requires us to consider, first whether Appellant’s arrest was unlawful, and second, if it was unlawful, whether his consent was obtained “by exploitation of that illegality.”
Wong Sun v. United States,
1
In
United States v. Prescott,
*1412 a
We consider first Appellant’s claim that the government failed to meet its burden of showing that the police had sufficient probable cause to arrest him in his apartment. Probable cause requires “a reasonable belief, evaluated in light of the officer’s experience and the practical considerations of everyday life, that the suspect[ ] ... committed a crime and [is] to be found in the place to be searched.”
United States v. Robertson,
Appellant’s argument presumes that California law controls our disposition of this question. That belief is clearly incorrect.
E.g., United States v. Chavez-Vernaza,
b
We now turn our attention to Appellant’s claim that exigent circumstances did not justify the warrantless entry into his apartment. Exigent circumstances are defined as “those circumstances that would cause a reasonable person to believe that entry ... was necessary to prevent physical harm to the officers or other persons, the destruction of relevant evidence, the escape of the suspect, or some other consequence improperly frustrating legitimate law enforcement efforts.”
United States v. McConney,
We begin by noting that the typical exigencies arise in a home arrest situation because the arresting officers reasonably believe that the suspects either know or will learn at any moment that they are in immediate danger of apprehension.
See, e.g., United States v. Manfredi,
Quite unlike that situation is one where the arresting officers have no reason to believe that the suspects are aware of their imminent capture. Suspects who are inside their homes and unaware of their impending arrests generally have no reason immediately to flee,
e.g., United States v. Blake,
We note too that there are a few rare situations where the suspects’ knowledge of their imminent capture is irrelevant to the exigency calculus. For example, the officers need not wait for a warrant if they reasonably believe that evidence is being currently removed or destroyed and it is impractical to advert the situation without immediately arresting the suspects or seizing the evidence.
E.g., United States v. Licata,
Undoubtedly the officers here reasonably believed that the nature of Appellant’s crimes was indicative of his danger and, further, that he possessed evidence that he might destroy. But we cannot conclude on the record before us that the officers reasonably believed that Appellant either knew or was in substantial danger of learning of his imminent capture. Nor can we in good conscience conclude that, like the conduct of the officers in
Good, Echegoyan,
and
Licata,
the officers here reasonably believed that even absent that knowledge immediate entry
5
into Ap
*1415
pellant’s apartment was necessary to prevent him from either currently endangering lives or currently destroying evidence.
See Allard,
The government apparently argues that by the time the officers could have obtained an arrest warrant Appellant would have grown suspicious and therefore would have resorted to desperate measures. But we cannot measure the exigency of the circumstances by what might have happened in the interim period. The totality of the circumstances, viewed at the
moment
the police decided to enter Appellant’s apartment, do not warrant a finding of exigency. Further, we have held several times before, on remarkably similar facts, that the police cannot avoid the good faith requirement of attempting
6
to obtain an arrest warrant because of an imagined delay.
E.g., Alvarez,
2
Our conclusion that Appellant was arrested unlawfully does not end our analysis of whether his voluntary consent to the search of his home and automobile was rendered ineffective.
See United States v. Wellins,
“The first two factors go primarily to the question whether an illegally arrested or detained defendant’s response to police questioning is ‘sufficiently an act of free will to purge the primary taint of the unlawful invasion.’ ”
United States v. Perez-Esparza,
The last of the three factors, “the purpose or flagrancy of the official misconduct,” is “particularly important” because it comes closest to satisfying “the deterrence rationale for application of the exclusionary rule.”
Id.
This factor has been decisive most often in those cases where police officers did not have probable cause to effectuate an arrest, but instead took a suspect into custody hoping that an interrogation would yield incriminating statements.
E.g., Brown,
*1417 B
Appellant argues that the search of his apartment and automobile cannot be sustained on the basis of his wife’s consent either. The general rule is that a consent to search obtained from third persons is effective if they possess “common authority over or other sufficient relationship to the premises or effects sought to be inspected.”
United States v. Matlock,
C
Even if we agreed that Appellant’s wife’s consent was ineffective, we still would be compelled to affirm Appellant’s convictions. There is little doubt that the officers had probable cause to suspect that Appellant’s automobile contained contraband. His automobile was still warm from being recently driven on a day that Appellant was known to have committed at least two bank robberies. Under such circumstances a reasonable officer would suspect that the vehicle not only was used in the robberies, but that it still contained the fruits of those crimes. That is all that is needed to sustain the warrantless search of an automobile.
See United States v. Johns,
Appellant’s convictions could be sustained on the basis of the evidence seized from the automobile alone. At trial the jury was allowed to consider various evidence that included fingerprints lifted from several locations, a large amount of cash, and two handguns. They also considered the testimony of several witnesses who identified Appellant as the perpetrator of the crimes. Only a small portion of the cash and one of the two handguns was recovered from Appellant’s apartment. “ ‘[I]t is clear beyond a reasonable doubt that if the jury had not considered’ the tainted evidence ‘its verdict would have been the same’ ” based on the remaining, overwhelming evidence of his guilt.
LePage v. Idaho,
*1418 III
Only two issues remain for our consideration and neither merits much discussion. Appellant argues that the district court erred in quashing a Fed.R.Crim.P. 17(c) subpoena he caused to be issued shortly after trial began. The subpoena was directed to the FBI and sought extensive information for all bank robberies occurring in Orange County between December 25, 1986, and July 10, 1987. A subpoena such as this one, however, is “not intended to provide a means of discovery for criminal cases.”
United States v. Nixon,
Appellant also argues that the district court improperly deemed the defense to have rested its case after exhausting all its witnesses. Appellant’s argument is unconvincing. The district court warned both parties before trial began that they could expect their cases to be considered completed at the time they ran out of witnesses. This admonition does not run afoul of Rule 57 of the Federal Rules of Criminal Procedure, which allows district courts wide latitude in regulating the progress of criminal trials. Nor does the application of the Rule under the circumstances here violate Appellant’s fifth amendment right to a fair trial. The witnesses that Appellant wanted to call would not have helped his defense. Appellant had already sought unhelpful exculpatory identification testimony from other robbery witnesses; equally unhelpful would have been the testimony of a fingerprint expert who would have only corroborated the findings of the government’s own expert. The district court did not abuse its discretion by limiting Appellant’s right to solicit testimony from these witnesses.
IV
Even though Appellant was arrested unlawfully and his consent to the search of his apartment and automobile was thereby tainted, we uphold the district court’s denial of his motion to suppress because his wife’s consent was sufficient to excuse the warrantless searches. Also, the district court did not err when it quashed the subpoena or when it deemed Appellant’s case closed after he ran out of witnesses. Appellant’s convictions are AFFIRMED.
Notes
. Because of his injuries, Appellant’s written signature was made by placing an "x” on the consent form with his nonwriting, good arm.
. Appellant’s wife, who also testified at the suppression hearing, claimed that she did not sign the consent form until around 5:30 p.m. and by that time the search of the automobile had already been completed and the search of the apartment was in progress. The district court resolved this conflicting testimony against Appellant, stating: "On that point let me observe that I do not conclude any search was going on until Mrs. George executed her consent.”
. This point follows from the premise of
Welsh v. Wisconsin,
. "Good faith means not acting with the intent improperly to circumvent the warrant requirement by purposefully precipitating a situation, 'through illegal conduct,’ in which the destruction of evidence or contraband is likely.”
United States
v.
Kunkler,
. The government also argues that the warrant-less entry into Appellant’s apartment was justified by the so-called doctrine of "hot pursuit.”
See Warden v. Hayden,
. We view Officers Fowks’s and Kartinen’s admissions that they have
never
attempted to obtain a telephonic warrant and consequently do not know how one can be obtained as a shocking reminder of the apparent disuse of the procedure outlined in Fed.R.Crim.P. 41(c)(2). Such an excuse hardly justifies lack of compliance with the dictates of the fourth amendment.
See Alvarez,
. This resolution in Appellant’s favor obviates any need to decide his related contention that the officers’ failure to comply with state and federal knock and announce requirements also means that his arrest was effected unlawfully.
See
18 U.S.C. § 3109 (1982); Cal.Pen.Code § 844 (West 1988). Although compliance with these statutes, too, can be excused for exigencies,
see Ker v. California,
. In so holding we realize that the Supreme Court recently granted certiorari in a case applying the fruit of the poisonous tree doctrine to circumstances where the police had probable cause to arrest a defendant even though they did so in his home and without a warrant.
See People v. Harris,
