Master Sgt. Mike Evans, a crew chief from Joint Base Pearl Harbor-Hickam, Hawaii, prepares a C-17 Globemaster III before a contest at Air Mobility Rodeo 2011 at Joint Base Lewis-McChord, Wash., July 27. Air Mobility Rodeo is the U.S. Air Force's and Air Mobility Command's premier international combat skill and flying operations competition designed to develop and improve techniques, procedures and interoperability, while optimizing international mobility partnerships and enhancing mobility operations. (U.S. Air Force photo/Staff Sgt. Nicholas Pilch)