OPINION
Raymond Franzwa Sinclair pleaded guilty to one count of a two-count indictment charging him with conspiracy to possess with intent to distribute crack cocaine in violation of 21 U.S.C. § 846. The plea followed an evidentiary hearing in which the district court entertained a motion by Sinclair and several co-defendants to suppress certain statements relevant to each count of the indictment. Sinclair now appeals from the district court’s order partially denying the motion to suppress, arguing that the statements were obtained after an unconstitutional police detention, and that his arrest was not supported by probable cause. Finding no merit in these contentions, we affirm the judgment of the district court.
I
In July 1989 Officer Scott Cline was conducting an undercover drug-dealing investigation in Waynesboro, Virginia. Acting on a tip from a reliable informant, Officer Cline contacted Maurice Levy, an inmate in the Augusta County jail, and while posing as a narcotics dealer offered to procure money for Levy’s bail in exchange for crack cocaine. During one of their conversations about the arrangement Levy told Officer Cline: “My boys are suppose [sic] to be coming down tomorrow with a half [kilogram of cocaine].” Levy also stated that his “boys” were to “reach down there [Waynesboro] sometime tomorrow.” With respect to their arrival time, Levy said, “[W]ell[,] I don’t know what time the bus leaves. But they be down here tomorrow night.” When Officer Cline asked whether his “boys” were bringing the cocaine on the bus, Levy answered, “Yea.” The following conversation then took place:
Cline: Man that’s scary. Do they got a good way to bring it?
Levy: Yeah, don’t worry about it man, it’s going to be down here.
Cline: Alright.
Levy: Because that stuff is going to be bigger than the one in the radio.
Cline: Alright.
Levy: Better than that.
Cline: Is it going to be ready rock?
Levy: Ready, ready.
Referring to his “boys,” Levy remarked, “[I]f they don’t know you, they not going to deal with you. But it’s Jamaicans, I’m a Jamaican. You know what I’m saying?”
*600 Levy and Officer Cline also discussed a second, unrelated narcotics transaction in which Officer Cline was to obtain a smaller quantity of crack cocaine from Levy’s associates in the Waynesboro area. Levy directed Officer Cline to collect the drugs from a local dealer named “Ace,” who was holding them in a radio. Levy also bade Officer Cline tell Ace: “Maurice sent you [Cline] from New York.” Moreover, Officer Cline learned from Levy that Ace had a girlfriend named Lisa.
After his conversations with Levy, Officer Cline obtained a schedule for buses passing through Waynesboro and Staunton from New York the next day. He concluded from the schedule that Levy’s “boys” would arrive either on a 12:35 p.m. bus in Waynesboro, a 1:30 p.m. bus in Staunton, or a bus stopping in Waynesboro later that evening. Officer Cline and two other members of the Waynesboro police force then went to the Waynesboro bus station to await the arrival of the 12:35 bus.
As the bus pulled into the station, Officer Cline joined the queue of passengers waiting to embark. From his position he saw four black males, including a man later identified as Sinclair, get off the bus. He overheard them speaking in what he believed were Jamaican accents. Officer Cline also observed that two of the four were wearing pagers, devices his experience in drug investigation work had led him to associate with narcotics dealers. Officer Cline boarded the bus and asked the driver where the men had embarked; the driver replied that they had come from New York. Officer Cline thereupon joined his fellow officers in their patrol car.
As the four men made their way along a public street leading away from the station, walking in groups of two some distance apart, the officers pulled their car between the first and second groups and ordered the men to stop. Most of the suspects were carrying luggage; one bore a large radio. Drawing their weapons, the officers identified themselves and told the men to drop their bags and place their hands on the car. A pat-down search of the men revealed no weapons. Officer Cline then asked where they were going; one of the four answered that they were “going to Lisa’s.” Responding to a question from one of the suspects about what was happening, Officer Cline said that he suspected they had drugs.
While Officer Cline was addressing the four suspects, a fellow officer radioed the Virginia State Police to request that a drug-sniffing dog and its trainer be dispatched to the scene. When the dog arrived, Officer Cline placed the luggage and the radio in a line on the ground. On its second walk past the bags, the dog responded as if it sensed the presence of narcotics; on its third pass, the animal alerted to the radio. When Officer Cline asked each suspect whether the radio belonged to him, two of the four said “No.” The men were then driven to the Waynes-boro police station, fifteen to twenty minutes having elapsed since the initial stop. At the station Officer Cline obtained a search warrant to open the radio. When he discovered crack cocaine inside, the men were read their rights and placed under arrest.
A grand jury charged the four men with conspiracy to possess crack cocaine with intent to distribute, and possession of crack cocaine with intent to distribute, violations of 21 U.S.C. §§ 841(a)(1), 841(b)(l)(B)(iii), and 846. The defendants then jointly moved to suppress certain evidence and statements taken from them in alleged dereliction of their Fourth, Fifth, and Sixth Amendment rights, arguing that the intrusive techniques employed by the officers escalated the encounter into an arrest. Because the warnings required by
Miranda v. Arizona,
The district court identified three issues in the defendants’ motion to suppress: (1)
*601
whether the initial stop was a valid investigative detention; (2) when, if ever, the initial stop escalated into an arrest; and (3) whether that arrest was supported by sufficient probable cause. The court concluded that (1) the initial stop was a valid investigative detention under the rule announced in
Terry v. Ohio,
II
Sinclair assigns error to two of the three conclusions that sustained the district court’s partial denial of the defendants’ motion to suppress. Specifically, he claims that Officer Cline had no probable cause to arrest him, and that the court did not determine correctly when his arrest took place. We address these points in turn, reviewing legal conclusions involved in the district court’s suppression determination
de novo. See United States v. Rusher,
A.
First, Sinclair argues that the police did not have probable cause to arrest him. We are mindful that “probable cause is a fluid concept — turning on the assessment of probabilities in particular factual contexts — not readily, or even usefully, reduced to a neat set of legal rules.”
Illinois v. Gates,
We find the Supreme Court’s decision in
Draper v. United States,
A brief comparison of the instant facts with those of Draper reveals their close kinship. Like the investigating officers in Draper, Officer Cline had been informed *602 by Maurice Levy that (1) Levy's “boys" would be coming “down” by bus; (2) Levy was from New York; (3) the men would be Jamaicans; (4) the men would be arriving on a certain day, by nightfall; and (5) the men were bringing narcotics. He compared what Levy had said with what he observed and learned in the bus station: (1) that the men had boarded the bus in New York; (2) that more than one suspect was present; (3) that the men had Jamaican accents; (4) that the bus arrived on the designated day before nightfall; and (5) that two of the men were wearing pagers, which Officer Cline's experience in narcotics investigations had led him to associate with drug dealers. The suspects thus matched in at least four particulars the description Officer Cline had received from Levy.
The Supreme Court has clearly stated that probable cause determinations are neither technical nor abstruse; “ ‘they are the factual and practical considerations of everyday life on which reasonable and prudent men, not legal technicians, act.’ ”
Gates,
B.
Second, Sinclair contends that the district court erred in failing to determine that he was arrested from the moment the police initially stopped him. He argues that the officers’ use of drawn weapons to detain him and his companions was not the least intrusive means of effecting the limited investigative purpose of the stop, that Officer Cline had no reason to believe Levy’s “boys” were armed or dangerous, and that the pat-down search rendered the encounter both intimidating and coercive. Sinclair therefore asserts that the Terry stop was, in fact, a full-blown arrest. Because the police failed to administer Miranda warnings to the suspects immediately after arresting them, he reasons, all statements made by them should have fallen victim to the suppression motion.
Neither the pronouncements of the Supreme Court nor our own precedents lend support to Sinclair’s arguments. Although “the investigative methods employed [in a
Terry
stop] should be the least intrusive means reasonably available to verify or dispel the officer’s suspicion in a short period of time,”
Florida v. Royer,
Nor does the fact that Officer Cline had no reason to believe Levy’s “boys” were armed and dangerous make the officers’ drawing of weapons improper. In
Seni
a police officer stopped and frisked at gunpoint two persons suspected of drug-related offenses without knowing whether they were armed or dangerous.
Seni,
The fact that the officer drew his gun and frisked [the suspects] does not necessarily elevate the stop into an arrest. [A]n officer may draw his gun and conduct a frisk when justified as a reasonable precaution for protection and safety.
Id.
at 283. In so ruling we relied upon
United States v. Worthington,
Sinclair’s contention that the pat-down search escalated the encounter into an arrest is equally unpersuasive. In
Moore,
we held that “[a]n officer making a lawful investigatory stop may protect himself by conducting a search for concealed weapons whenever ‘he has reason to believe that the suspect is armed and dangerous.’ ”
Id.
at 1107 (quoting
Adams v. Williams,
Despite the weight of these authorities, Sinclair nonetheless contends that the stop- and-frisk was so intrusive that it amounted to an arrest. He argues that, because he did not feel free to leave during the stop, he was in a custodial situation. As we noted in
Moore,
however, the perception that one is not free to leave is insufficient to convert a
Terry
stop into an arrest.
See
*604
Moore,
Ill
For the foregoing reasons, we find Sinclair’s arguments meritless and the conclusions of the district court wholly persuasive. Accordingly, the judgment is
AFFIRMED.
Notes
In addition, Sinclair could not successfully argue that the length of the
Terry
stop in the instant case — twenty minutes — was excessive. In
United States v. Sharpe,
