AVIANO AIR BASE, Italy — Air Force Senior Airman Jaorge Valero, 31st Maintenance Operations Squadron, cross-references the part serial number sheet against the engine part serial numbers so they

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AVIANO AIR BASE, Italy — Air Force Senior Airman Jaorge Valero, 31st Maintenance Operations Squadron, cross-references the part serial number sheet against the engine part serial numbers so they can be easily tracked and maintained here May 3. (U.S. Air Force photo by Staff Sgt. Michael Holzworth)