If you were looking for your regular DJ on one of 8 radio stations in the Miami area today, they were not there. South Florida's CBS 4 reported that Y100.7, Big 105.9, Love 94, 610 WIOD, 940 WINZ, 103.5 BEAT, Mega 94.9, and ZETA remained on the air with recorded programs, while their staffs were bussed to safety pending a police investigation of a phoned-in threat of a "white powder attack." So, it would have been like listening to JACK-FM.
The most relieved person in the vicinity was probably Kenny Walker, who was fired last week from the Kenny and Footy show on one of the threatened stations, Y 100.7. Lucky for Kenny that he didn't need to worry about going through the panic of being evacuated in a potential crisis situation - you know, since he was just recently fired from one of the affected stations... just last week.
Coincidentally (part 2), Miami's Finest underwent (yes, it's a word) an Anthrax attack simulation just last week, according to the Miami Herald.