Maintenance Time
Technical Sgt. Nick Massa, Senior Airman Jeff Hash and Technical Sgt. Richard Fisher perform a series of maintenance tasks on the engine of a KC-135 Stratotanker at Selfridge Air National Guard Base, Mich., Dec. 4, 2010. Maintenance personnel at Selfridge perform a series of regular inspections and preventative maintenance actions to ensure the KC-135s are mission ready. The Airmen are members of the 127th Wing, Michigan Air National Guard. (U.S. Air Force photo by TSgt. Dan Heaton) (RELEASED)