Staff Sgt. Derrick Shelton, 424th Air Base Squadron airfield systems technician, repairs a radio at Chièvres Air Base, Belgium, Feb. 25, 2016. Airmen from the 424th ABS provide airfield operations support for the Supreme Allied Commander Europe and Supreme Headquarters Allied Powers Europe, NATO transient aircraft and distinguished visitors. (U.S. Air Force photo/Staff Sgt. Sara Keller)