videos
False tornado alarm concerns WI residents
PD: Terror watch list stop a false alarm
Tornado sirens inadvertently activated at 3 a.m.
Panic on the streets as siren warns of attack, air defence systems deploy
Training exercise activated false tornado alarm
False alarm tornado siren throws St. Charles County residents into panic
Former Civil Defense Vice Director says siren system is "very very easy" to sound
False ballistic missile alarm forces Hawaii into panic mode
Police Siren Sound Effect
False alarm scares UMMC