Misawa CES personnel badn together for airfield construction
Hiroshi Nakasato, a Japanese contractor, left, readies a concrete truck to fill a spall on the flight line as U.S. Air Force Airman 1st Class Samuel Hooper, a 35th Civil Engineer Squadron heavy equipment and pavement technician, watches, at Misawa Air Base, Japan, May 23, 3017. Concrete is a a mixture of cement, various rocks, water and wood or magnesium. (U.S. Air Force photo by Airman 1st Class Sadie Colbert)