- Nov 19, 2001
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The 309th Aerospace Maintenance and Regeneration Group (AMARG),[1] often called The Boneyard, is a United States Air Force aircraft storage and maintenance facility in Tucson, Arizona, located on Davis-Monthan Air Force Base.
It takes care of more than 4,400 aircraft, which would make it the second largest air force in the world, including 700 F-4 Phantom IIs, whose total original purchase price is estimated at $27 billion. An Air Force Materiel Command unit, the group is under the command of the 309th Maintenance Wing of Hill Air Force Base, Utah. AMARG was originally meant to store excess Department of Defense and Coast Guard aircraft, but has in recent years been designated the sole repository of out-of-service aircraft from all branches of the US government.
http://en.wikipedia.org/wiki/309th_Aerospace_Maintenance_and_Regeneration_Group
Holy hell, that's a lot of money and technology.