Tech. Sgt. James Banik, 28th Civil Engineer Squadron heavy equipment technician, adjusts a laser leveler during construction of a retaining wall outside the 28th Bomb Wing Headquarters building at Ellsworth Air Force Base, S.D., Sept. 8, 2014. The wall was built to protect the building from water leaking in during heavy downpours. (U.S. Air Force photo by Senior Airman Anania Tekurio/Released)