During World War II, the airfield was requisitioned by the United States Army Air Forces Air Transport Command as the headquarters for the 4th Ferrying Command for movement of new aircraft overseas. During this time, the Federal government expanded the airport to 1,500 acres (6.1 km2). At the end of the war, the airport was returned to the control of the city, with a number of facilities remaining for support of the tenant unit of the Tennessee National Guard.[1]