During World War II, the United States Army Air Forces (USAAF) established numerous airfields in North Carolina for antisubmarine defense in the Atlantic Ocean and for training pilots and aircrews of USAAF fighters and bombers. It is still possible to find remnants of these wartime airfields. Many were converted into municipal airports, some were returned to agriculture and several were retained as United States Air Force installations and were front-line bases during the Cold War. Hundreds of the temporary buildings that were used survive today, and are being used for other purposes.