ATC keeps it controlled
Staff Sgt. Jillion Clark, 51st Operations Support Squadron air traffic control journeyman, checks the incoming flight schedule while working at an accelerated tempo to accommodate the operational readiness exercise, Beverly Bulldog 13-02, at Osan Air Base, Republic of Korea, Feb. 12, 2013. Air traffic controllers direct the movement of aircraft into and out of military airfields all over the world, track aircraft by radar and give voice instructions by radio. (U.S. Air Force photo/Airman 1st Class Alexis Siekert)