U.S. Marine Corps Lance Cpl. Mack Grady with Transportation Support Company (T.S. Co.), Combat Logistics Regiment 2, 2nd Marine Logistics Group, fires 40 mm rounds from an MK-19 grenade launcher on Camp Lejeune, N.C., May 28, 2014. The Marines of T.S. Co. shot the Mk-19 as part of crew served weapons training qualifications. (U.S. Marine Corps photo by Lance Cpl. Desir M. Mora/Released)