Staff Sgt. Robert Pennington performs a special inspection on a 7.5 ton flightline crane Aug. 24, 2010, on Joint Base Charleston, S.C. Periodic inspections are performed as part of the quality assurance program to ensure safety and compliance regulations are met and that vehicles are safe to operate. Sergeant Pennington is a quality insurance inspector with the 437th Maintenance Group. (U.S. Air Force Photo/Senior Airman Timothy Taylor)