Drones, drones, drones...
They've converted F-100's, F-102's, F-106's, F-4's... the list goes on!
Anyhoo, for anyone interested in a bit of info on QF-100's:
http://home.att.net/~jbaugher1/f100_10.html
Here's a shot of a QF-100 on death row. This one was assigned to the 82nd TATS, 475th WEG, ADWC at Tyndall AFB, Florida. This Hun was the last kill during William Tell '84, having a wing blown off by an AIM-7.
Fade to Black...