U.S. Army Staff Sgt. Mike Koch, U.S. Army Golden Knights parachutist, floats down from a jump during the 2015 Dakota Thunder airshow and open house at Ellsworth Air Force Base, S.D., Aug. 15, 2015. Cook carried the American flag with him during his jump as part of the opening ceremony for the day. (U.S. Air Force photo by Airman 1st Class James L. Miller/Released)