OSAN AIR BASE, South Korea—Staff Sgt. Matthew Kolar hooks up a portable balancing system on an A-10 Thunderbolt II jet engine March 31 to monitor vibrations on the engine. Sergeant Kolar is an aerospace propulsion craftsman from the 25th Fighter Squadron. (U.S. Air Force photo by Staff Sgt. Corey Clements)
Added On | 14th September 2015 |
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