U.S. Air Force Staff Sgt. Colin Coleman, a loadmaster

U.S. Air Force Staff Sgt. Colin Coleman, a loadmaster with the 535th Airlift Squadron, conducts preflight procedures before flying an airdrop mission during exercise Rim of the Pacific (RIMPAC) 2012 at Joint Base Pearl Harbor-Hickam, Hawaii, July 25, 2012. RIMPAC is a U.S. Pacific Command-hosted biennial multinational maritime exercise designed to foster and sustain international cooperation and security on the world's oceans. (U.S. Air Force photo by Staff Sgt. Jason Robertson)