Staff Sgt. Wesley Daniel, 51st Maintenance Group, checks some paperwork while an Airman gets an A-10 Thunderbolt II assigned to the 25th Fighter Squadron ready for munitions August 29, 2011, during an Operational Readiness Exercise. Exercises such as this test Osan Air Base's ability to survive and operate during a war-time constraint. (U.S. Air Force photo/Tech. Sgt. Chad Thompson)