Private First Class Ivan Arredondo, a rifleman with 2nd Battalion, 3rd Marine Regiment, shoots an M203 40 mm grenade launcher with a recently developed sight as part of new equipment training at Kaneohe Bay Range Training Facility, Nov. 19, 2013. (U.S. Marine Corps photo by Lance Cpl. Suzanna Knotts) - Private First Class Ivan Arredondo, a rifleman with 2nd Battalion, 3rd Marine Regiment, shoots an M203 40 mm grenade launcher with a recently developed sight as part of new equipment training at Kaneohe Bay Range Training Facility, Nov. 19, 2013. (U.S. Marine Corps photo by Lance Cpl. Suzanna Knotts)