ATC supervisors control the air
U.S. Air Force Staff Sgt. Kathleen A. Peck, an air traffic control watch supervisor with the 354th Operations Support Squadron, works in the air traffic control tower on Eielson Air Force Base, Alaska, during Northern Edge, June 17, 2015. Northern Edge 2015 is Alaska’s premier joint training exercise designed to practice operations, tactics, techniques and procedures as well as enhance interoperability among the services. Thousands of Airmen, Soldiers, Sailors, Marines and Coast Guardsmen from active-duty, Reserve and National Guard Units are involved. (U.S. Marine Corps photo by Cpl. Thor J. Larson/Released)