"BACKBLAST AREA CLEAR??"
We had a girl in BCT who fired an AT4 dummy round (they resemble flaming tennis balls) when the drill sergeant was standing right behind her... she got kicked off the range and recycled back to the beginning of training.
That same day we were working with the grenade launcher on the M16/M203, and we had a guy that couldn't get it to work. He spent 15 minutes performing SPORTS on the M16 portion of the weapon. The drill sergeant kept egging him on... it was some hilarious shit.