The 309th Aerospace Maintenance and Regeneration Group (AMARG) is part of Air Force Materiel Command and is responsible for the base's aircraft "graveyard", the largest in terms of number of planes in the world,Purner 2004, pp. 31–32. where old military and other aircraft are stationed either to be stored indefinitely, demilitarized for museum or monument display, stripped and pulped/recycled, or restored for service.Gentzen, V.J. "Experimental detection and quantitative interrogration of damage in a jointed composite structure." University of Maryland MSc Thesis, June 2008. Retrieved 27 December 2009.
