U.S. Marine Corps Staff Sgt. David Denseley, center, from Salt Lake City, Utah, with to the Regional Corps Battle School (RCBS) assists the Afghan National Army (ANA) mortarmen clean out the bore of a 60mm mortar at a mortar range near Camp Shorabak, Helmand province, Afghanistan, May 4, 2013. The Marines with RCBS trained the ANA soldiers to improve on their proficiency with the 60mm mortar weapons system. (U.S. Marine Corps photo by Staff Sgt. Ezekiel R. Kitandwe/Released)