Air Force Staff Sgt. Casey Epps, right, provides directions to Air Force Senior Airman Bobby Rayscales Jr. as he unloads dirt during the construction of a new drainage system at Bagram Airfield, Afghanistan, Sept. 7, 2016. Epps is a pavements and equipment technician and Rayscales is an engineer assistant assigned to the 455th Expeditionary Civil Engineer Squadron. Air Force photo by Senior Airman Justyn M. Freeman