Senior Airman Kevin Ball, 51st Civil Engineer Squadron electrical apprentice, attaches tent canvas to a tent frame outside Osan High School March 29, in preparation for a Noncombatant Evacuation Exercise at Osan Air Base, Republic of Korea. A NEO exercise tests a base's capability to evacuate noncombatants and nonessential personnel from a location in a host foreign nation to a safe haven. The NEO was part of a pre-scheduled exercise to preparae for an Operational Readiness Inspection the 51st Fighter Wing will undergo in April. (U.S. Air Force Photo/Staff Sgt. Brian Ferguson)