gonfirmed
There were some anons last year who thought AF1 was arriving but it was nightwatch
Air Force One, any U.S. Air Force aircraft with the President on board.
Marine One, the Presidential helicopter.
Army One, usually a helicopter. The Army shared the duty of transporting the President by helicopter with the United States Marine Corps until 1976, when the latter took on sole responsibility.
Navy One, this designation has been used only once, when in 2003 an S-3 Viking airplane flew then President George W. Bush to the aircraft carrier USS Abraham Lincoln.
Coast Guard One; this call sign has not yet been used, although Vice President Joe Biden did fly on Coast Guard Two in 2009.
Executive One, any civilian aircraft carrying the President.