An F-16 Fighting Falcon flies at a low altitude during close air support training Dec. 17, 2013, at Aviano Air Base, Italy. CAS training trains pilots to use military aircraft to deter and eliminate enemy ground forces that are in close proximity to friendly forces. This requires detailed coordination with ground troops and is typically conducted through joint terminal attack controllers. (U.S. Air Force photo by Senior Airman Briana Jones/Released)
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