A young ensign is working late at the Pentagon one evening. As he clocks out of his office at about 2000, he sees the Admiral standing by the classified document shredder in the hallway, a piece of paper in his hand.
"Do you know how to work this thing?" the Admiral asks. "My secretary's gone home and I don't know how to run it."
"Yes, sir," says the young ensign, who turns on the machine, takes the
paper from the Admiral, and feeds it in.
"Thanks," says the Admiral, "I just need one copy..."
Having spent 6 years in the Navy I can appreciate this one.