Two VH-3D 'Marine One' presidential helicopters

Marine One is the call sign of any United States Marine Corps aircraft carrying the President of the United States. It usually denotes a helicopter operated by the HMX-1 "Nighthawks" squadron, either the large VH-3D or the newer, smaller VH-60N "WhiteHawk".

A Marine Corps aircraft carrying the Vice President has the call sign Marine Two. Marine Corps aircraft carrying the family of the President adds the designator F to have its callsign become Marine One Foxtrot. Those carrying the family of the Vice President use the callsign Marine Two Foxtrot.