WHAT TIME IS IT?

On some air bases, the military is on one side of the field and
civilian
aircraft use the other side of the field, with the control tower in the
middle. One day the tower received a call from an aircraft asking,
"What
time is it?"
The tower responded, "Who is calling?"
The aircraft replied, "What difference does it make?" The tower
replied,
"It makes a lot of difference. If you're a United Airlines Flight, it's
3 o'clock. If you're an Air Force flight, it's 1500. If you're a Navy
flight, it's 6 bells. If you're an Army flight, the big hand is on the
12 and the little hand is on the 3. If you're a Marine Corps flight,
it's Thursday afternoon. and if you are Airforce One...tell President
Bush... ....to call Dick Cheney for the right time.