The first time I was in the States I almost shit my pants when they went off. The guys I was with thought that it would be really "funny" to go ape-shit like it was a real 3-minute warning

Plus later that night I saw the emergency broadcast channel (I think that's what you call it) which was being tested or something so that made me jump again.

Nearest we had in Britain was this: Domestic Nuclear Shelters

Duck & Cover indeed :stoned: