U.S. Marines with the 15th Marine Expeditionary Unit’s Maritime Raid Force prepare to fire their weapons on the flight deck of the USS Anchorage (LPD 23) in the South China Sea, June 7, 2015. The 15th MEU’s MRF must maintain their marksmanship proficiency while at sea on deployment. (U.S. Marine Corps photo by Sgt. Steve H. Lopez/Released)