A Marine with 1st Battalion, 2nd Marine Regiment posts security during a military operations on urbanized terrain exercise at Marine Corps Base Camp Lejeune, N.C., Nov. 21, 2017. The Marines conducted MOUT training to maintain combat readiness. (U.S. Marine Corps photo by Lance Cpl. Ashley McLaughlin) - A Marine with 1st Battalion, 2nd Marine Regiment posts security during a military operations on urbanized terrain exercise at Marine Corps Base Camp Lejeune, N.C., Nov. 21, 2017. The Marines conducted MOUT training to maintain combat readiness. (U.S. Marine Corps photo by Lance Cpl. Ashley McLaughlin)

Marines with 2nd Battalion, 8th Marine Regiment enter a building during a military operation on urbanized terrain exercise at Camp Lejeune, N.C., Oct. 3, 2017. The Marines conducted MOUT training in preparation for their upcoming deployment to Japan. (U.S. Marine Corps photo by Lance Cpl. Ashley McLaughlin) - Marines with 2nd Battalion, 8th Marine Regiment enter a building during a military operation on urbanized terrain exercise at Camp Lejeune, N.C., Oct. 3, 2017. The Marines conducted MOUT training in preparation for their upcoming deployment to Japan. (U.S. Marine Corps photo by Lance Cpl. Ashley McLaughlin)

Marines prepare to breach an entrance during a Basic Urban Skills Training course at a Military Operations on Urbanized Terrain event at Camp Lejeune, N.C., April 5, 2017. The Marines participated in the training to learn and reinforce infantry skills as a predeployment work up. The Marines are with 2nd Light Armored Reconnaissance Battalion, Bravo Company, 2nd Marine Division. (U.S. Marine Corps photo by Pfc. Abrey D. Liggins) - Marines prepare to breach an entrance during a Basic Urban Skills Training course at a Military Operations on Urbanized Terrain event at Camp Lejeune, N.C., April 5, 2017. The Marines participated in the training to learn and reinforce infantry skills as a predeployment work up. The Marines are with 2nd Light Armored Reconnaissance Battalion, Bravo Company, 2nd Marine Division. (U.S. Marine Corps photo by Pfc. Abrey D. Liggins)

Corporal Tanner Pollock, a squad leader with 2nd Combat Engineer Battalion, 2nd Marine Division, and Fort Wayne, Ind. native, holds security while Lance Cpl. Ryan Zerites, a combat engineer with 2nd CEB, and Greensboro, N.C. native, calls in a 9-line medical evacuation request during Military Operations in Urban Terrain, or MOUT, training aboard Camp Lejeune, N.C., April 8, 2015. The training included Marines going out in squad sized elements to attack an objective being held by Marines in the defensive position after the squad leaders built terrain models and informed their Marines on avenues of approach and objectives. (U.S. Marine Corps photo by Cpl. Krista James/Released) - Corporal Tanner Pollock, a squad leader with 2nd Combat Engineer Battalion, 2nd Marine Division, and Fort Wayne, Ind. native, holds security while Lance Cpl. Ryan Zerites, a combat engineer with 2nd CEB, and Greensboro, N.C. native, calls in a 9-line medical evacuation request during Military Operations in Urban Terrain, or MOUT, training aboard Camp Lejeune, N.C., April 8, 2015. The training included Marines going out in squad sized elements to attack an objective being held by Marines in the defensive position after the squad leaders built terrain models and informed their Marines on avenues of approach and objectives. (U.S. Marine Corps photo by Cpl. Krista James/Released)

Sergeant William P. Reckley, a section leader with 2nd Assault Amphibian Battalion, 2nd Marine Division, from Ayden, N.C., pulls open a door while assaulting Mobile MOUT Town aboard Marine Corps Base Camp Lejeune, Oct. 20, 2013. “‘Amtrackers’ are known for being flexible and being able to conduct any mission, whether it’s assaulting a beach and taking it over or supporting the infantry in an urban environment; both of those are gained by doing this training,” said 1st Lt. Michael Bianca, a platoon commander with the battalion, and Huntsville, Ala., native. - Sergeant William P. Reckley, a section leader with 2nd Assault Amphibian Battalion, 2nd Marine Division, from Ayden, N.C., pulls open a door while assaulting Mobile MOUT Town aboard Marine Corps Base Camp Lejeune, Oct. 20, 2013. “‘Amtrackers’ are known for being flexible and being able to conduct any mission, whether it’s assaulting a beach and taking it over or supporting the infantry in an urban environment; both of those are gained by doing this training,” said 1st Lt. Michael Bianca, a platoon commander with the battalion, and Huntsville, Ala., native.

Corporal George Lynch, a squad leader with Company C, 1st Battalion, 2nd Marine Regiment, 2nd Marine Division briefs his squad before clearing a building during military operations in urban terrain training aboard Marine Corps Base Camp Lejeune Oct. 7, 2013. The squad practiced security patrols throughout the MOUT town and practiced using proper technique to clear rooms one-by-one. - Corporal George Lynch, a squad leader with Company C, 1st Battalion, 2nd Marine Regiment, 2nd Marine Division briefs his squad before clearing a building during military operations in urban terrain training aboard Marine Corps Base Camp Lejeune Oct. 7, 2013. The squad practiced security patrols throughout the MOUT town and practiced using proper technique to clear rooms one-by-one.