Service members utilize computer systems for operational work at the Harden Theater Air Control Center, Osan Air Base, Republic of Korea, during Ulchi Freedom Guardian, Aug. 20, 2014. UFG provides an opportunity to evaluate, train and improve combined, joint coordination, procedures, plans and systems necessary for contingency operations by the ROK and U.S. forces. (U.S. Air Force photo by Senior Airman Racheal E. Watson/Released)