Air traffic control: eyes in the sky
A B-52H Stratofortress lands at Minot Air Force Base, North Dakota, Aug. 21, 2018. Before a B-52 can land, the pilot must be in contact with the Air Traffic Control Tower to ensure the flight line is clear and safe to land. (U.S. Air Force photo by Airman 1st Class Alyssa M. Akers)