Triathlons, the love of the challenge
First Lt. Corey Hayes, 28th Force Support Squadron food service officer, runs in a triathlon at Ellsworth Air Force Base, S.D., May 21, 2016. He completed a 750-meter swim, 12-mile bike ride and 5k run, winning first place in his category. (U.S. Air Force photo by Airman Donald Knechtel/Released)