True story (I am told). A WHEC CG cutter was in the yard in Charlie status. A 1st class electrician mate was working alone on the bridge. He suddenly opens up the PA system Mike and announces NOW HEAR THIS. THIS IS A DRILL...THIS IS A DRILL. He next holds up a portable drill to the Mike and presses the trigger.
And that, gentle reader, is how a 1st class gets demoted to 3rd class.