ELLSWORTH AFB, S.D. – Airman 1st Class Kirby Coker, 28th Aircraft Maintenance Squadron aircrew egress systems journeyman, conducts routine maintenance on a B-1B Lancer’s ejection seat, Dec. 15. Seats such as these are inspected every 60 months, or whenever taken out of the aircraft. (U.S. Air Force photo/Senior Airman Kasey Close)