ELLSWORTH AIR FORCE BASE, S.D. – Senior Airman Nathan Schroeder, 28th Maintenance Squadron aircraft metals technology journeyman, cleans metal shavings off a computer numerical control machine before it continues milling a spoiler bellcrank, Sept. 30. Airman Schroeder spent more than 90 hours of programming to create the bellcrank, which is no longer manufactured. (U.S. Air Force photo/Senior Airman Kasey Close)