call sign
unique designation for a transmitting station
Aircraft of the President of the United States#Navy One
air traffic control call sign of any US Navy aircraft carrying the President of the United States
Army One
air traffic control call sign of any US Army aircraft carrying the president of the USS
aviation call sign
unique aircraft identifiers
call signs in the United Kingdom
overview of call signs in this country
maritime call sign
call signs assigned as unique identifiers to ships and boats
Coast Guard One
coast Guard aircraft carrying the President
Bravo Two Zero
SAS Gulf War patrol
Air Force One
official United States presidential aircraft
amateur radio call sign
call sign for amateur radio operator or station, using a ITU prefix
Marine One
Marine Corp helicopters used to transport U.S. President
call signs in North America
North American broadcast call signs