A young PNSN is working late at the Pentagon one evening. As he clocks out of his office around 1800, he sees the Admiral standing by the classified document shredder in the hallway, a Top-Secret-ESI 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 PN, who turns on the machine, takes the paper from the Admiral, and quickly feeds it in.
'Thanks,' says the Admiral, 'I just need one copy...'