A newly commissioned second Lieutenant discovered that he had no coins at all for the soda machine. He asked a passing enlisted man if he had change for a dollar. "I'm pretty sure I do, hang on a sec buddy." "Just a minute !" snapped the Lieutenant. "That's no way to reply to an officer. Now let's try it again. Soldier, do you have any change ?" The enlisted man came to attention, saluted, and said, "No sir !"