Staff Sgt. Andrew Wahlin, 28th Operations Support Squadron aircrew flight equipment craftsman, threads the side flap closure cord during a parachute inspection at Ellsworth Air Force Base, S.D., Jan. 24, 2012. Every parachute must be disassembled, inspected, and repacked at least once every five years to ensure all parachutes are in serviceable condition. (U.S. Air Force photo by Airman Alystria Maurer/Released)