Under the Fourth Amendment, a Terry stop and frisk must be supported by reasonable suspicion that a crime has been or will soon be committed. Here, police received a tip from a second-hand source and did not investigate the accuracy of the tip with the first-hand witness before stopping and frisking Mr. Farrington. Does unverified second-hand information provide adequate foundation for reasonable suspicion of criminal behavior to support a Terry stop and frisk?

QUESTION PRESENTED Under the Fourth Amendment, a Terry stop and frisk must be supported by reasonable suspicion that a crime has been or will soon be committed. Here, police received a tip from a second-hand source and did not investigate the accuracy of the tip with the first-hand witness before stopping and frisking Mr. Farrington. Does unverified second-hand information provide adequate foundation for reasonable suspicion of criminal behavior to support a Terry stop and frisk?