Equipment from the 1950s showing a certification date of 1969, April 28, 2017, on Dover Air Force Base, Del. ADB Companies and the 436th Operations Support Squadron Air Traffic Control and Landing Systems install $540 thousand worth of state-of-the-art radios, replacing equipment that dates to the 1950s and operated on archaic and degrading infrastructure. (U.S. Air Force photo by Staff Sgt. Jared Duhon)
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