Stop And Frisk
"A brief, non-intrusive, police stop of a suspect. The Fourth Amendment requires that the police have a reasonable suspicion that a crime has been, is being, or is about to be committed before stopping a suspect. If the police reasonably suspect the person is armed and dangerous, they may conduct a frisk, a quick pat-down of the person’s outer clothing. "
Retrieved from law.cornell.edu/wex/stop_and_frisk