Tech. Sgt. James Banik, 28th Civil Engineer Squadron heavy equipment technician, lifts 1,600 –pound blocks of cement using a wheeled excavator during the construction of a retaining wall outside the 28th Bomb Wing Headquarters building at Ellsworth Air Force Base, S.D., Sept. 8, 2014. When completed the wall will stand over seven feet tall and protect the building from rain damage. (U.S. Air Force photo by Senior Airman Anania Tekurio/Released)