Marines with 1st Battalion, 8th Marine Regiment conduct M249 light machine gun training at G-21 Machine Gun Range aboard Camp Lejeune, N.C., Dec. 11, 2014. Marines honed in on weapon skills and knowledge as they engaged various targets at unknown distances during different live-fire scenarios. - Marines with 1st Battalion, 8th Marine Regiment conduct M249 light machine gun training at G-21 Machine Gun Range aboard Camp Lejeune, N.C., Dec. 11, 2014. Marines honed in on weapon skills and knowledge as they engaged various targets at unknown distances during different live-fire scenarios.