The Air Force sent at least 39 retired A-10 Thunderbolt IIs to the boneyard in 2024, a significant increase as the service moves toward removing the aircraft from its inventory even as it recently used the planes in training exercises and in combat overseas. Data from the 309th Aerospace Maintenance and Regeneration Group at Davis-Monthan Air Force Base in Arizona showed that 39 A-10C aircraft were brought to the boneyard -- the final resting place for retired planes and jets -- between January