Eyes to the sky, Air Traffic Controllers help B1s Fly
Second Lt. Charles Nichols, 28th Operations Support Squadron airfield operations system officer, studies the conditions of the flightline during a training simulation at Ellsworth Air Force Base, S.D., Jan. 7, 2016. Air traffic controllers use the simulator as a way to keep sharp and be prepared for all scenarios. (U.S. Air Force photo illustration by Airman 1st Class James L. Miller/Released)