Working the night shift
SIOUX FALLS, S.D. -- Maintenance crews work on an F-16C Fighting Falcon here Sept. 11. The South Dakota Air National Guard's 114th Fighter Wing is conducting night flying missions during their September unit training assembly. (U.S. Air Force photo by Master Sgt. Don McLeer)

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Photo by: Master Sgt. Don McLeer |  VIRIN: 040911-F-3567M-010.JPG