MARTIN, J., dеlivered the opinion of the court, in which MOORE, J., joined. KENNEDY, J. (pp. 632-34), delivered a separate dissenting opinion.
OPINION
The United States of America appeals the district court’s grant of William Edward Richardson’s motion to suppress evidence seized from a vehicle in which he was a passenger. In light of the specific facts of this case and for the reasons that follow, we AFFIRM.
I
On October 19, 2000, Officer Darryl Fisher noticed a vehicle recklessly swerving between two eighteen-wheel trucks on Interstate 65 in Tennesseе. Officer Fisher pulled the vehicle over for following too closely in violation of section 55-8-124 of the Tennessee Code. The entire traffic stop was recorded by the video camera in Officer Fisher’s police car.
The following people were traveling in the vehicle: the driver, Ricky Collier; the defendant, Richardson; Richardson’s wife, Shirley Richardson; and their son, William Darnell Richardson, whom we refer to as Darnell. Officer Fisher requested to inspect Collier’s license. At this point, Officer Fishеr noticed that the occupants of the vehicle appeared nervous. In particular, he noticed that Collier’s hand trembled as he presented his license and Darnell’s lips quivered as he spoke. Upon learning that Shirley Richardson was the owner of the vehicle, Officer Fisher requested to inspect her driver’s license and registration. As she searched for this information, Shirley spilled all of the contents of her purse onto the floorboard. Officer Fisher perceived this action as a sign of nervousness. He asked the vehicle’s occupants about their travel plans, to which Darnell responded that they had been to Nashville to see his lawyer. The videotape’s sound recording reveals that Darnell also muttered something about having a back problem.
Officer Fisher then asked Collier to step to the back of the car. There, Officer Fisher informed Collier that he was going to issue a warning citation for traveling too closely to the first truck. Collier remained behind the cаr while Officer Fisher re *628 turned to his police car, where he narrated his impressions of the incident into the video camera, specifically noting the nervous appearance of the vehicle’s occupants.
When Officer Fisher returned, he asked Collier about his travel plans. Collier responded that they had gone to Nashville to see a doctor. Officer Fisher then gave the citation to Collier and shook his hand, and Collier turned around to return to his vehicle.
At that point, Officer Fisher аsked Collier to answer a few more questions, and Collier agreed. Officer Fisher asked whether there were any drugs, money, or guns in the car, to which Collier responded in the negative. Then, instead of allowing Collier to return to the vehicle, Officer Fisher asked Collier to remain behind the car while he asked Shirley Richardson for permission to search the car. 1
While Officer Fisher and Collier were talking, Darnell moved to the driver’s seat. Thus, when Officer Fisher returned to the driver’s side of the car, he asked Darnell fоr his driver’s license. Darnell complied and Officer Fisher was satisfied with his identification. Officer Fisher then asked Darnell whether there were any guns in the car. Darnell responded that he had a gun in the vehicle. Darnell explained that his employer, the Lawrence County Sheriffs Department, authorized him to carry the gun. Darnell gave permission to Officer Fisher to inspect the gun. Upon inspection, Officer Fisher discovered that the gun was loaded. He stated that he would have to inquire into Darnell’s employment аnd permit to carry the gun. Before doing so, however, Officer Fisher asked for permission to search the vehicle. The parties dispute whether Shirley Richardson gave her consent at this time.
Officer Fisher then radioed for assistance and also contacted the Lawrence County Dispatch to inquire about Darnell’s employment. The dispatcher erroneously informed him that Darnell was not employed there and had been arrested a few times for drug possession. At this point, Officer Tommy Goetz аrrived on the scene to assist.
Officer Fisher asked the occupants to exit the vehicle and empty their pockets. Defendant Richardson stated that his pants were too tight to empty his pockets. Officer Fisher patted down Richardson and noticed that Richardson turned his body to the left. Officer Fisher felt something on Richardson’s left side. He proceeded to ask Shirley Richardson again whether he could search the vehicle and she responded in the affirmative. After Officer Fisher told Officer Goetz that he had felt something on defendant Richardson’s left side, Officer Goetz conducted a second pat-down and discovered a handgun in Richardson’s pocket.
Richardson was placed under arrest and subsequently indicted for possession of a firearm by a convicted felon in violation 18 U.S.C. § § 922(g)(1) and 924(a). He moved to suppress the handgun evidence as fruit of an unlawful seizure. The district court granted the motion to suppress, holding that Officer Fisher seized the vehicle and its occupants for no reаsonable suspicion. The United States filed this timely appeal.
II
In reviewing the judgment, we are asked to decide two questions: 1)
*629
whether the vehicle and its occupants were unlawfully seized following the conclusion of the traffic stop, and 2) whether the handgun evidence found thereafter was fruit of the unlawful seizure. We review the district court’s factual findings in a suppression hearing for clear error and the district court’s conclusions of law de novo.
United States v. Waldon,
A, Seizure of the vehicle and its occupants
The primary interests that the Fourth Amendment protects include an interest in freedom of movement and insulation from the fear and anxiety produced by unlawful seizure. In the traffic stop scenario, these interests are personal to all occupants of the vehicle that is detained,
United States v. Mesa,
Unlawful seizure occurs when an officer, without reasonable suspicion, “by means of physical force or show of authority .;. in some way restraints] the liberty of a citizen.”
Terry v. Ohio,
In determining whether a particular encounter between an officer and a citizen constitutes a seizure, we recognize that words alone may be enough to make a reasonable person feel that he would not be free to leave.
See United States v.
*630
Buchanon,
The United States argues that while the occupants may not have wanted to leave the scene, that “says nothing about whether Officer Fisher’s conduct toward them was coercive.” However, so long as Collier obeyed Officer Fisher’s instruction to remain outside of the vehicle, his passengers were as unable as he to leаve the scene. Also, that Darnell moved from his original position to the driver’s seat does not affect our conclusion. This movement by itself indicates nothing about his willingness to drive away without Collier or his belief that he could lawfully take such action.
B. Reasonable suspicion
Having concluded that a seizure occurred, we now address whether Officer Fisher had the requisite reasonable suspicion to seize Collier and his passengers. In doing so, we must determine from the totality of the circumstances whether the seizure was suppоrted by “ ‘specific and articulable facts that give rise to a reasonable suspicion of criminal activity.’ ”
United States v. Orsolini,
In support of its argument that reasonable suspicion justified the seizure, the government combines the following factors:
(1)Nervousness, as evidenced by Collier’s trembling hand, Darnell Richardson’s quivering lip and difficulty speaking, and Shirley Richardson’s spilling of the contents of her purse;
(2)Allegedly conflicting explanations of their travel plans; and
(3) Darnell Richardson’s movement to the driver’s seat.
The district court concluded that there was nothing inherently suspicious about the group’s nervousness in this instance. We agree, and note that although nervousness has beеn considered in finding reasonable suspicion in conjunction with other factors,
Mesa,
The United States argues that the district court erred by considering each factor individually and that when considering the factors in combination, reasonable suspicion existed tо further detain Collier and his passengers. We recognize that even a string of innocent behavior added together may amount to reasonable suspicion of criminal activity.
See United States v. Arvizu,
III
Absent reаsonable suspicion, the evidence obtained as a result of the unlawful detention in this case must be suppressed as fruit of the unlawful seizure. There is, however, an exception to the rule when the causal chain is broken by a voluntary statement.
United States v. Brown,
We shall, in our discretion, decline to address this argument because, as the United States conceded; it did not raise the argument before the district court.
See Singleton v. Wulff,
IV
For the foregoing reasons, we affirm the judgment of the district court.
Because I believe that the conduct of Officer Fisher did not violate the defendant’s Fourth Amendment rights, I would reverse the district court’s decision finding that Officer Fisher seized the defendant when he requested Collier to remain outside the car while he intended to ask the car’s owner for permission to search it.
Neither the defendant nor the majority question thе validity of the traffic stop nor the questioning of Collier at the rear of the car. Rather, the majority holds that once Officer Fisher’s consensual questioning with Collier was completed, the officer was then required to permit Collier to immediately re-enter the car and thus permit the occupants, including the defendant, to be on their way; and that a delay, caused by the officer’s decision to ask the owner for permission to search the car for drugs or guns, resulted in an unlawful detention of the defеndant. In reaching its conclusion, the majority relies upon our decisions in
United States v. Hill,
In
Hill,
a deputy sheriff pulled over a U-Haul for speeding.
In
Mesa,
like
Hill,
the defendant was stopped for speeding. After the defendant retrieved her driver’s license, the officer “directed the defendant to sit in the back seat of [his] police vehicle.”
In
Robinette,
a deputy sheriff stopped the defendant for speeding.
Id.
at 35,
It is well settled that an officer may approach a person to ask questions or seek permission to search, provided that the officers do not imply that answers or consent are obligatory.
See e.g., INS v. Delgado,
It is clear then, after considering the Court’s and this Circuit’s precedents, that Officer Fisher was entitled to ask the owner for her consent to search the vehicle.
3
See Bostick,
Since I believe that Officer Fisher was entitled to ask the owner for permission to search her car, and that his request to Collier to remain outside the car did not constitute a seizure where 1) he was not restrained from leaving, and 2) the request was reasonable under the circumstances, I would therefore reverse the district court’s conclusion to the contrary.
Notes
. There is some dispute over the precise language that Officer Fisher used to indicate that he desired Collier to remain behind the car. The United States asserts that the district court erred as a factual matter in finding that Officer Fisher told Collier to "wait where he was” and instead asserts that Officer Fisher stated, "Okay, just hang out right here for me, okay?” This dispute, however, is not significant to our analysis and conclusion.
. As we recently noted in
United States v. Burton,
. Indeed, after the Supreme Court decided
Ohio
v.
Robinette,
.One may attempt to distinguish Bostick or Royer, where the officers approаched the defendants for questioning while the defendants were not in legal custody, from the present case, where the occupants were in legal custody until the purposes of the traffic stop were completed, and then were posited questions and asked to consent to a search, by arguing that in the latter case an individual may not feel as if he has a right to refuse the officer's request because he was just in legal custody and, in fact, may believe he still is in legal custody. However, unless the officer's conduct and questions intimated that answers were obligatory, then such a concern would merely go to the voluntariness of the consent, not whether the consent was a fruit of an illegal seizure.
. It is clear that Officer Fisher, while he was talking with Collier at the rear of the car, noticed Darnell Richardson exit the passenger seat and take the driver’s seat.
. Officer Fisher would have needed to talk around the front passenger because he always approached the car on the passenger’s side for safety reasons to avoid exposure to freeway traffic.
