U.S. Air National Guard Lt. Col. Mark Davis, 147th

U.S. Air National Guard Lt. Col. Mark Davis, 147th Medical Group chief of optometry, from Texas, along with U.S. Air Force, Marine Corps, Army and Navy personnel create stairs on a hill for Unggai Primary School during Pacific Angel at the Eastern Highlands, Papaua New Guinea, May 29, 2015. The mission of Pacific Angel is to upgrade education and health facilities, as well as work to deepen local disaster response capabilities. (U.S. Air Force photo by Staff Sgt. Marcus Morris/Released)