Gary Sharp, Air Force Flight Standards Agency Air Traffic Control equipment specialist, calibrates a new Instrument Landing System, at Dover Air Force Base, Delaware, Dec. 11, 2020. The newly installed ILS is one of five of its kind in the Air Force and the only one of its kind in Air Mobility Command. Dover is serving as a test base for this new system.(U.S. Air Force photo by Airman 1st Class Faith Schaefer)

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Photo by: Airman 1st Class Faith Schaefer |  VIRIN: 201211-F-MO780-1013.JPG