Airmen maintain physical readiness
Airman 1st Class Ryan Prewitt, 2nd Force Support Squadron fitness specialist, signs in Senior Airman Joseph Trahan, 2nd Aircraft Maintenance Squadron crew chief, for his physical fitness test on Barksdale Air Force Base, La., Aug. 5, 2013. The Air Force physical fitness test is comprised of four components, an abdominal circumference, push-ups, sit-ups and a 1.5 mile run or 1 mile walk. (U.S. Air Force photo/Senior Airman Sean Martin)