Juan Thomas sprays a protective sealant on the tail of a KC-135E Stratotanker to prepare the aircraft for storage and preservation at the Aerospace Maintenance and Regeneration Group storage site at Davis Monthan Air Force Base, Ariz. AMARG's mission has evolved beyond merely the storage and preservation of aircraft. Today the center provides customer services including aircraft regeneration which means restoring aircraft to flying status, limited depot-level maintenance, parts reclamation, historic storage and disposal functions. (U.S. Air Force photo/Bennie J. Davis III)