Sending a test signal
U.S. Senior Airman Muhammad Jackson, 39th Communications Squadron cable maintenance supervisor, checks for bad telephone lines at Incirlik Air Base, Turkey, Aug. 12, 2020. Every building at Incirlik is connected by communication cables, which house up to hundreds of smaller wires that connect every part of a building to the rest of the base. (U.S. Air Force photo by Staff Sgt. Ryan Lackey)
Staff Sgt. Ryan Lackey
24.0-70.0 mm f/2.8
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