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FAIRCHILD AIR FORCE BASE, Wash. -- Senior Airman Matthew Swift and Staff Sgt. Thomas Hersman, 92nd Communications Squadron airfield systems technicians, describe the air traffic control radio system to Col. Gregory Touhill (center), Air Mobility Command director of communications. Colonel Touhill visited with the 92nd CS on Monday and Tuesday to discuss upcoming changes to the communications career field. (U.S. Air Force photo/Senior Airman Anthony Ennamorato)