Funny Military Joke-22

A Singapore radio station receives a call.
“This is the military. Can you tell us the exact time?”
The deejay asks: “Who wants to know?”
The caller says: “What difference does that make?”
The deejay explains: “If you are spies, it’s three o’clock. If you are pilots, it’s 15 hundred hours. If you are navy guys, it’s six bells. If you are local army cadets, it’s 120 minutes to happy hour.”