Fit to Fight: Never ending struggle
U.S. Air Force Reserve Senior Master Sgt. Kevin Smith, SNCO for sustainment services, 913th Force Support Squadron, spells out the rules for sit-ups for the 913th Airlift Group Airmen taking their physical fitness assessment test at Little Rock Air Force Base, Ark., April 1, 2017. The Air Force uses overall composite fitness score and minimum scores per component based on aerobic fitness (1.5-mile timed run), body composition (abdominal circumference measurements) and muscular fitness components (push-ups and sit-ups) to determine overall fitness. (U.S. Air Force photo by Master Sgt. Jeff Walston/Released)