Master Sgt. Ryan Martin, 535th Airlift Squadron first sergeant, stands at parade rest while holding the unit’s guidon in front of a C-17 Globemaster III, during the squadron’s change of command ceremony, near the flightline at Joint Base Pearl Harbor-Hickam, Hawaii, March 15, 2013. The 535th AS has provided humanitarian assistance and disaster relief to China, Indonesia, American Samoa, Haiti, and Japan. (U.S. Air Force photo/Tech. Sgt. Jerome S. Tayborn)