Defendant Alfredo Gonzalez entered a conditional plea of guilty to charges of conspiring to possess with intent to distribute and possessing with intent to distribute at least five kilograms of cocaine. He now appeals the district court’s denial of his motion to suppress evidence, claiming law enforcement officers lacked probable cause for his arrest and that the search of his car was thus tainted by the illegal arrest. We REMAND the case to the district court for additional fact finding as explained below.
FACTS
Testimony at the Motion to Suppress
On September 28, 1989, Special Agent David Tinsley of the Drug Enforcement Administration (DEA) received the first in a series of tips about the cocaine smuggling activities of Alfredo Gonzalez and Ernesto Barrios. The telephone informants, a man and a woman, declined to identify themselves.
Over the next few days, Agent Tinsley received seven or eight calls from the tipsters, who provided him with specific information including .the names of Gonzalez, his wife, Jeanette Gonzalez, and Barrios; physical descriptions of the three conspirators; vehicle descriptions, including license plate numbers; the address and description of the Gonzalez residence; a description of a yacht called the “Royal Highness II”; estimations of the yacht’s time and place of arrival at one of two south Florida marinas; the ultimate destination of the cocaine; and the method of shipping the cocaine in secret compartments built into the yacht. Tinsley verified names, addresses, licenses and vehicle descriptions. He also discovered that United States Customs suspected Gonzalez and Barrios of smuggling and that the Royal Highness II had been stopped and searched before, but no contraband had been found. He was unable to verify previous successful smuggling trips. The female tipster also told Tinsley that Mrs. Gonzalez would be travelling by yacht to the Bahamas to pick up cocaine, but Mrs. Gonzalez never made the trip. 1
Based on the tips, Tinsley immediately set up surveillance of the Gonzalez’ home in Coral Gables with assistance from the local police department. On the evening of October 1, 1989, the anonymous callers informed Tinsley that the yacht would be arriving at a marina in Fort Lauderdale with a shipment of 20 kilograms of cocaine *1001 and that Mrs. Gonzalez would be travelling to the marina in a blue Mercedes with a certain tag number to pick up Mr. Gonzalez and Barrios. The next day, as predicted, Mrs. Gonzalez left the house in the blue Mercedes and drove north to the Bahia Mar Marina in Fort Lauderdale. She drove at a high rate of speed, closely following a red Oldsmobile. Coral Gables Detective Jeffrey Vance followed the two cars. He had trouble getting into the marina, but approximately five to ten minutes after the Mercedes and Oldsmobile reached the marina, he saw the Oldsmobile leave.
Detective Vance’s delay entering the marina prevented him from seeing Mrs. Gonzalez for a few minutes after she parked the car. He next saw Mrs. Gonzalez when she stepped off the Royal Highness II and walked to another vessel, a demonstrator for sale by the marina. She climbed up to the demonstrator’s flying bridge and sat watching for approximately ten or fifteen minutes. While she was there, Vance walked past and exchanged pleasantries with the woman, who replied in Spanish. 2 Mrs. Gonzalez eventually got down from the flying bridge and went back to the blue Mercedes.
Vance then observed Mr. Gonzalez and Barrios inside the Royal Highness II. They left the vessel approximately fifteen minutes later, carrying three bags which appeared to be heavy. They took the bags to the trunk of the blue Mercedes, then drove south with Mrs. Gonzalez. On the return trip, the Mercedes drove carefully, never exceeding the speed limit.
The car drove past the Gonzalez residence, then made a U-turn and pulled in. 3 Ten to twelve agents and detectives were waiting. Half were in uniform and half were in street clothes. The agents/detectives were armed; according to Gonzalez, they had guns drawn. Agent Tinsley, Detective Vance, and Detective Garcia approached the car. They identified themselves and told Gonzalez, his wife, and Barrios to get out of the car and sit on the ground apart from each other. According to Vance, “[the conspirators] were under arrest as soon as we got there.”
Tinsley and Garcia then walked with Gonzalez to the back of the car. They testified that they first advised Gonzalez of his Miranda rights; 4 then told him they believed narcotics were in the trunk and requested his consent to search the car. They explained the consent to search form in both English and Spanish. In response to Gonzalez’ question, they told him that they would not search his house. 5 After reviewing the consent form, Gonzalez requested that Tinsley change the word “residence” to “vehicle” and write in “Blue Mercedes” with the appropriate license tag number. Once these changes were made, Gonzalez signéd the form.
Tinsley discovered three travel bags in the trunk. The bags contained coffee wrapped in dark plastic garbage bag material, and inside the coffee, cocaine. While Tinsley searched, Garcia asked Gonzalez how much was in the trunk. Gonzalez replied “twenty;” later measurements confirmed a total of twenty kilos, as predicted by the informants. Gonzalez, his wife, and Barrios were then taken to the police station.
The grand jury indicted all three with conspiring to possess with intent to distribute and possessing with intent to distribute at least five kilograms of cocaine. Both Mr. and Mrs. Gonzalez filed a motion to suppress, which was denied following an evidentiary hearing. The district court decided that the officers had probable cause to believe there was cocaine in the trunk. The court also concluded that the consent to search had been freely, voluntarily, and intelligently given by Gonzalez without *1002 force, threats, or promises, and that Gonzalez had been advised of his Miranda rights at' the scene of his arrest. Gonzalez entered a conditional plea of guilty, reserving his right to appeal the order denying his motion to suppress.
Testimony at the Trial of Jeanette Gonzalez
Mrs. Gonzalez’ first trial ended in a hung jury. She was acquitted on retrial. During Mrs. Gonzalez’ second trial, Detective Vance acknowledged that he had made a mistake in his previous identification of Mrs. Gonzalez as the woman on the flying bridge. He stated that he had made his initial identification based upon his observations that the female who drove the Mercedes from the Gonzalez home to the marina had blond hair, the woman he had observed on the flying bridge of the boat at the marina had blond hair, Mrs. Gonzalez had been previously described by an anonymous caller as a blond latin female, and later, a blond Mrs. Gonzalez was arrested along with her husband and Barrios in the Mercedes where the cocaine was stored. Vance realized his mistake after he had the opportunity to see and hear the testimony of one of the defense witnesses during the first trial of Jeanette Gonzalez. At the second trial, he testified that Jeanette Gonzalez was not the person on tbe flying bridge of the boat at the Fort Lauderdale marina. He also modified his characterization of the U-turn near the Gonzalez’ home as surveillance, instead agreeing that there was “nothing unusual” about the turn.
Testimony at the Post-Judgment Hearing for Additional Fact Finding
Based upon the changes in testimony, Mr. Gonzalez moved for additional fact finding regarding his prior motion to suppress. At the ensuing evidentiary hearing, Vance testified that he had not met Mrs. Gonzalez before the date of her arrest. As he followed her to the marina that day, he was never closer than half a block and he had been able to determine only that the vehicle was operated by a female with blond hair. Because it was dusk when he observed the woman on the flying bridge, he was able to ascertain only that this woman was a latin female with blond hair who fit the description of Jeanette Gonzalez. Vance reiterated that he realized his mistake after he had the opportunity to see and hear the testimony of one of the defense witnesses during the first trial of Mrs. Gonzalez.
The district court found that Detective Vance had not deliberately lied, but had made a mistake in identification. The court summarily denied Gonzalez’ request for additional fact finding. No explanation of the factors considered in redetermining probable cause was provided.
PROBABLE CAUSE TO ARREST GONZALEZ
Gonzalez contends that his warrant-less arrest was unsupported by probable cause, and that, therefore, the district court erred in denying his motion to suppress the evidence (cocaine) seized. Probable cause to arrest exists when law enforcement officials have facts and circumstances within their knowledge sufficient to warrant a reasonable belief that the suspect had committed or was committing a crime.
Beck v. Ohio,
The Informants’ Tips
In
Illinois v. Gates,
the Supreme Court approved a “totality of the circumstances” approach to determining when information provided by an informant is sufficient to create probable cause.
Id.
at 230-34,
The government points out that the DEA and Coral Gables police did, in fact, corroborate most of the information provided by the unknown callers. But a review of the record shows that the details Agent Tinsley was actually able to confirm consisted of innocent facts such as names, addresses and descriptions of the parties involved.
Although “innocent behavior frequently will provide the basis for showing of probable cause ... [i]n making a determination of probable cause the relevant inquiry is not whether particular conduct is ‘innocent’ or ‘guilty,’ but the degree of suspicion that attaches to particular types of noncriminal acts.”
Gates,
Other Factors To Be Considered For Probable Cause
Along with reliable or corroborated tips, the observations and experiences of the law enforcement officers working a case must be weighed as a part of the totality of the circumstances that might create probable cause for an arrest. In this case, we think Mrs. Gonzalez’ driving patterns and the detective’s perception that counter-surveillance measures were in effect significantly enhanced the measure of suspicion which officers already had based on the corroborated tips.
The driving patterns which we think contributed to probable cause are the speeding trip to the marina, and the contrasting return home, during which the speed limit was never broken. These maneuvers may be open to innocent explanations. But the determination that probable cause exists for a warrantless arrest is fundamentally a factual analysis that must be performed by the officers on the scene. At the time of the arrest and in conjunction with the reasonable suspicion created by corroboration of the informants’ tips, the officers could reasonably have believed that the speeding reflected an effort to get the cocaine shipment unloaded quickly, and the slow, careful return drive reflected an effort to avoid *1004 attracting attention while the stash was in the car.
• Officers were also aware that a U-turn, while in this case necessary to circumvent the median on the street where the Gonza-lezes lived, often functions as a useful counter-surveillance tool to see if the driver is. being followed. “The officers’ experience may be considered in determining probable cause.... Conduct innocent in the eyes of the untrained may carry entirely different 'messages’ to the experienced or trained observer.”
United States v. Fouche,
Particularly important in the probable cause calculation is Detective Vance’s impression that Mrs. Gonzalez was conducting counter-surveillance from her post on the flying bridge at the marina. That he was ultimately found to be mistaken does not detract from the legitimate contribution this impression — if his mistake was objéc-tively reasonable 7 — made at the time to the totality of the circumstances leading to probable cause.
The Supreme Court has repeatedly recognized “the need to allow some latitude for honest mistakes that are made by officers in the dangerous and difficult process of making arrests and executing search warrants.”
Maryland v. Garrison,
In
Hill v. California,
The upshot was that the officers in good faith believed Miller was Hill and arrested him. They were quite wrong as it *1005 turned out, and subjective good-faith belief would not in itself justify either the arrest or the subsequent search. But sufficient probability, not certainty,, is the touchstone of reasonableness under the Fourth Amendment and on the record before us the officers’ mistake was understandable and the arrest a reasonable response to the situation facing them at the time.
Hill,
The Second Circuit has upheld the arrest and search incident to arrest where police arrested the wrong man.
United States v. DeLeon,
In
United States v. Glasser,
“Because many situations which confront officers in the course of executing their duties are more or less ambiguous, room must be allowed for some mistakes on their part. But the mistakes must be those of reasonable men, acting on facts leading sensibly to their conclusions of probability.”
Brinegar v. United States,
If the answer to these questions is “yes,” probable cause undoubtedly existed for the arrest underlying this appeal. If the answer is “no,” this case is considerably closer and raises doubts. We therefore remand the case for further proceedings in the district court, including specific fact finding on these important questions about the reasonableness, at the time and under the circumstances, of Detective Vance’s mistaken belief about countersurveillance. 8
*1006 A policeman’s mistaken belief of fact can properly contribute to a probable cause determination and can count just as much as a correct belief as long as the mistaken belief was reasonable in the light of all the circumstances. When a district court accepts a mistaken belief as a factor to be counted, the court should first find that the mistake was, itself, a reasonable one.
REMANDED.
Notes
. Barrios later testified that the original plan was for Mrs. Gonzalez to go to the Bahamas, but that plans changed due to bad weather.
. Vance was in plain clothes and travelling in an unmarked police car.
. A median strip blocked a direct turn into the driveway.
.
Miranda v. Arizona,
.Gonzalez denied being advised of his Miranda rights and testified that the agents threatened to search his house unless he signed the consent form.
. Some of the tips were verified after the arrest, for example, the quantity of cocaine (twenty kilos), the secret compartments on the yacht, and that the original plan actually required Mrs. Gonzalez to travel to the Bahamas. -But this information plays no role in a probable cause determination: the court must decide whether the objective facts available to the officers
at the time of arrest
were sufficient to justify a reasonable belief that an offense Was being committed.
See Beck,
. Much of Gonzalez’ supplemental brief to this court is about the good faith exception to the exclusionary rule. But this case is not about the good faith exception. That exception keeps evidence from being suppressed when law enforcement officers obtain evidence through objective good faith reliance on a facially valid warrant that is later found to lack probable cause,
see United States v. Leon,
. Gonzalez contends that the government has waived the issue of reliance on a mistaken view of the facts (or as Gonzalez phrased it, good faith mistake, see supra note 7). After reviewing the record, we disagree. Although the government made certain ambiguous comments and referred more than once to the court’s determination of probable cause "even if the court *1006 were to disregard Detective Vance’s testimony regarding the presence of Mrs. Gonzalez on the flying bridge ...", it is not plain to us that the government intended that the court necessarily disregard this testimony or conceded that the information ought to be given no weight. Combined with the government’s assertions of innocent mistake, these comments do not establish a waiver of the issue.
