160728-F-GX249-113
Petty Officer 3rd Class Collins Scheffer, Naval Mobile Construction Battalion 133 heavy equipment operator, left, talks to Petty Officer 2nd Class Christian Rivera, NMCB 22 heavy equipment operator, while operating a grader during construction of a parking pad at a Djibouti airfield, July 28, 2016. The grader is used to evenly spread gravel to a three-inch height during construction. (U.S. Air Force photo by Staff Sgt. Benjamin Raughton/Released)

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Photo by: Staff Sgt. Benjamin Raughton |  VIRIN: 160728-F-GX249-113.jpg