U.S. Marine Corps Sergeant Sean Kinney with Headquarters Company, Combat Logistics Regiment 2 (CLR-2), 2nd Marine Logistics Group, assists a Marine firing 40 mm rounds from an MK-19 grenade launcher on Camp Lejeune, N.C., May 28, 2014. The Marines of CLR-2 shot the Mk-19 as part of crew served weapons training qualifications. (U.S. Marine Corps photo by Lance Cpl. Desir M. Mora/Released)