There was reasonable suspicion to stop a vehicle which was observed coming across the border and driving to a known “smugglers’ rendezvous” at 5:30 a.m. At the border inspection point, a customs officer had noted that the driver seemed nervous and had a suspicious explanation for why he was crossing the border. The officer asked police to follow the vehicle, which drove directly to a spot known to be a “smugglers’ rendezvous,” picked up another person, and turned the opposite direction than his previous explanation had suggested. Possible innocent explanations for the driver’s behavior did not undermine the police officer’s reasonable suspicion. There was no articulated ethnic basis for the stop, and it represented “nothing but good police work.”