Leading from the front: 3/6 Marines train to become small unit leaders - A Marine with 3rd Battalion, 6th Marine Regiment, 2nd Marine Division ejects a spent round from an M203 40mm grenade launcher during a Tactical Small Unit Leaders Course at Camp Lejeune, N.C., Jan. 16, 2017. The 10-day course provides small unit leaders with the confidence, knowledge and ability to effectively lead Marines in combat situations. The course aimed to make the Marines team leaders and increase proficiency with various weapon systems and tactics so they can mentor their Marines and become a more effective team. (U.S. Marine Corps photo by Cpl. Aaron Henson)

Marines attempt to locate a notional target during a company attack exercise at Fort A.P. Hill, Va., May 1, 2017. The Marines conducted a live-fire exercise that helped improve their leadership and teamwork abilities. The Marines are with G Company, 2nd Battalion, 2nd Marine Regiment. (U.S. Marine Corps photo by Pfc. Abrey D. Liggins) - Marines attempt to locate a notional target during a company attack exercise at Fort A.P. Hill, Va., May 1, 2017. The Marines conducted a live-fire exercise that helped improve their leadership and teamwork abilities. The Marines are with G Company, 2nd Battalion, 2nd Marine Regiment. (U.S. Marine Corps photo by Pfc. Abrey D. Liggins)