The story goes that Air Force One was

over the UK a few years ago and called up a USAF base “Requesting

Radar”.

“What is you position?” asked ATC

“You got radar
you find us” Air Force One replied.

After a few minutes ATC
announced “Air Force One we’re changing
frequency”

“What
frequency are you changing to?” asked Air Force One

“You’ve got 720
channels – you find us!” ATC replied.