Naval Air Station Sanford (IATA: NRJ, ICAO: KNRJ, FAA LID: NRJ) was a naval air station of the United States Navy in Sanford, Florida, approximately 20 miles north of Orlando, Florida. Opening less than a year after the start of World War II, NAS Sanford's initial function was as an advanced training base for land-based patrol bombers, followed by carrier-based fighter aircraft. The air station briefly closed in 1946 and was placed in caretaker status until being reactivated in 1950. It eventually served as a Master Jet Base for carrier-based heavy attack and reconnaissance aircraft until 1969. After its closure, it reopened as civilian general aviation airport under various names with a non-Navy civilian airport identifier (IATA: SFB, ICAO: KSFB, FAA LID: SFB) until finally transitioning