Petty Officer 2nd Class Tom Ross, Naval Mobile Construction Battalion 22 heavy equipment operator, left, talks to Petty Officer 2nd Class Christian Rivera, NMCB 22 heavy equipment operator during construction of a parking pad at a Djibouti airfield, July 28, 2016. During construction, land was flattened, gravel was laid evenly, flattened again and covered with water to increase density and reduce dust. (U.S. Air Force photo by Staff Sgt. Benjamin Raughton/Released)

Photo by: Staff Sgt. Benjamin Raughton |  VIRIN: 160728-F-GX249-118.jpg