Grinding bolts

U.S. Air Force Airmen with the 455th Expeditionary Civil Engineer Squadron, grind down bolts on a polly pad on the flightline at Bagram Airfield, Afghanistan June 5, 2014. Grinding down the bolts is necessary to prevent aircraft from popping tires when running over the polly pad. (U.S. Air Force photo by Staff Sgt. Evelyn Chavez/Released)

PHOTO BY: Staff Sgt. Evelyn ChavezReleased
VIRIN: 140605-F-PB969-020.JPG
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