First Air Force is a numbered air force (NAF) in Air Combat Command (ACC) and the headquarters for the Air Force component of United States Northern Command. The 1st Air Force is based at Tyndall Air Force Base near Panama City, Florida.

On Dec. 18, 1940, First Air Force was activated as the Northeast Air District at Mitchell Field, Long Island, N.Y. It was redesignated First Air Force on April 9, 1941. During the World War II, First Air Force was responsible for the air defense of the entire eastern seaboard of the United States. At the end of World War II, First Air Force was again tasked with the air defense of the Northeast. It also continued in the training role (primarily with the Air National Guard and Air Force Reserve) until its inactivation on June 23, 1958. First Air Force was reactivated at Stewart Air Force Base, Newburgh, N.Y., on Jan. 20, 1966.