The United States Air Force Special Air Mission provides air transportation for the President of the United States (POTUS), Vice President of the United States (VPOTUS), First Lady of the United States (FLOTUS), Presidential Cabinet, U.S. Congressional delegations (CODELs), and other high-ranking American and foreign dignitaries.
The Special Air Mission is under the cognizance of the Air Mobility Command (AMC) and executed by the 89th Airlift Wing (89 AW) based at Andrews Air Force Base, Maryland.
Special Air Mission: A mission operated by the 89th Airlift Wing by direction of the USAF Vice Chief of Staff (CVAM). Primary passengers are the Vice President, Cabinet secretaries, and senior officials of the Executive Branch, as well as Congressional delegations and foreign senior statesmen.
https://en.wikipedia.org/wiki/Special_Air_Mission