View of retired U.S. Navy Lockheed P-3C "Orion" maritime patrol aircraft that are used to support active military planes at the 309th Aerospace Maintenance and Regeneration Group (309th AMARG) at Davis-Monthan Air Force Base in Tucson, Arizona (USA). The 309th AMARG is responsible for the storage and maintenance of aircraft for future redeployment, parts, or proper disposal following retirement by the military.