Walker Air Force Base is a closed United States Air Force base located three miles (5 km) south of the central business district of Roswell, New Mexico. It was opened in 1941 as an Army Air Corps flying school and was active during World War II and the postwar era as Roswell Army Air Field (RAAF). During the early years of the Cold War, it became the largest base of the Strategic Air Command. It is also known for the Roswell UFO incident, an event that occurred on 4 July 1947. It is alleged that a "flying disc" crashed during a severe thunderstorm near the base at Corona, New Mexico.

The 468th Bombardment Group was a World War II United States Army Air Forces combat organization. The unit served primarily in the Pacific Ocean theater and China Burma India Theater of World War II as part of Twentieth Air Force. The 468th Bomb Group's aircraft engaged in very heavy bombardment Boeing B-29 Superfortress operations against Japan. After its reassignment to the Mariana Islands in 1945, its aircraft were identified by a "I" and a triangle painted on the tail. It was inactivated on 31 March 1946.