Back in high school I read about a pretty unique false alarm that happened at a radio station down in Cocoa Beach. They had a goofy DJ that had prepared a modified EBS message in the event that an attack occurred - he had patriotic music in the background and a speech about keeping strong. This copy was to be played only in the event of an attack, but one day when he was out someone put it on the air during a routine test. As a result there was a mild panic, and some of the personnel at Patrick AFB nearby did a double-check to make sure it wasn't legit.
I've never heard the actual message - does this sound familiar to anyone?