Col. Gentry W. Boswell, former 28th Bomb Wing commander, boards a B-1 bomber for the last time as commander of the 28th Bomb Wing at Ellsworth Air Force Base, S.D., Aug. 7, 2017. The fini-flight is a celebration for an aviator, formally marking the point at which that aviator departs from their assigned unit or last time flying the aircraft. (U.S. Air Force photo by Airman 1st Class Donald C. Knechtel)