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Dustin Fulkerson, 434th Force Support Squadron exercise physiologist, cheers on Airmen as they run the runway during a physical fitness test at Grissom Air Reserve base, Ind., May 5, 2018. Fulkerson will teach a class aimed at helping Grissom members improve their running abilities. (U.S. Air Force photo/Staff Sgt. Jami K. Lancette)