McGhee Tyson Air National Guard Base (IATA: TYS, ICAO: KTYS, FAA LID: TYS) is a joint military facility located at McGhee Tyson Airport. It is located approximately 10 miles (16 km) south of the central business district of Knoxville, near Alcoa, Blount County, Tennessee, United States. It was the site of McGhee Tyson Air Force Base from 1952 until 1960.