Senior Airman Robert Pearson, 437th Maintenance Squadron crew chief, and Vincent Moseley, 437th MXS aircraft maintainer, remove a worn tire from a C-17 Globemaster III while the aircraft is lifted off the ground by jacks Oct. 7, 2013, at Joint Base Charleston, S.C. A team of eight crew chiefs used six jacks to raise a C-17 Globemaster III off the ground to change a tire and inspect the gears. (U.S. Air Force photo/Senior Airman Dennis Sloan)