Davis-Monthan AFB (Tucson, AZ) is today the location of the 309th Aerospace Maintenance and Regeneration Group (AMARG), the sole aircraft boneyard and parts reclamation facility for all excess military and government aircraft.

Aircraft from the Air Force, Navy, Marine Corps, Coast Guard, NASA and other government agencies are processed at AMARG, which employs 550 people, almost all civilians. It is the largest airplane boneyard in the world.

Another role of AMARG is to support the program that converts old fighter jets, such as the F-4 Phantom II and F-16, into aerial target drones.

It also serves as an auxiliary facility of the National Museum of the United States Air Force, and stores tooling for out-of-production military aircraft.

AMARG's typical inventory comprises more than 4,400 aircraft, which makes it the largest aircraft storage and preservation facility in the world.