Sizing up the situation
U.S. Air Force Maj. Michael Desantis, a pilot with the 317th Airlift Squadron, performs a pre-flight inspection on a C-17 Globemaster III to identify any discrepancies before taking off from Joint Base Charleston, S.C., for a night proficiency mission March 22, 2010. Night proficiency missions are conducted to ensure compliance with Air Force training requirements, which in return enhances a pilot's readiness to operate their aircraft at a moment's notice, day or night. (U.S. Air Force photo/Staff Sgt. Joshua L. DeMotts)