Today, surplus U.S. military planes are stored in the largest airplane boneyard in the world, operated by the 309th Aerospace Maintenance and Regeneration Group AMARG at Davis-Monthan Air Force Base in Tucson, Arizona Military unsure how physical access is handled at more than 100 installations The Air Force and Defense Logistics Agency monitor how control systems are used at posts, but the Army, Navy and Marine Corps do not, according to a… Aug 23, 2019 By Dave Nyczepir