U.S. Air Force Airmen partake in a physical fitness assessment at Langley Air Force Base, Va., Oct. 6, 2014. Airmen are evaluated in four portions of the Air Force PT test – push-ups, sit-ups, abdominal circumference measurement and a 1.5-mile run. (U.S. Air Force photo by Airman 1st Class Areca T. Wilson/Released)