Pfc. Alexander Sapp prepares to fire an M821 mortar round during a training event at Camp Lejeune, North Carolina, June 21, 2017. The training event was held to allow Marines from 2nd Air Naval Gunfire Liaison Company the opportunity to conduct call for fire missions with artillery and mortar assets of other units. Sapp is a mortarman with 1st Battalion, 6th Marine Regiment. (U.S. Marine Corps photo by Lance Cpl. Damarko Bones) - Pfc. Alexander Sapp prepares to fire an M821 mortar round during a training event at Camp Lejeune, North Carolina, June 21, 2017. The training event was held to allow Marines from 2nd Air Naval Gunfire Liaison Company the opportunity to conduct call for fire missions with artillery and mortar assets of other units. Sapp is a mortarman with 1st Battalion, 6th Marine Regiment. (U.S. Marine Corps photo by Lance Cpl. Damarko Bones)

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)

Maj. Gen. Walter L. Miller (right), commanding general of II Marine Expeditionary Force, speaks to Lt. Col. Robert Bodisch, commanding officer of 2nd Tank Battalion, 2nd Marine Division, about the progression of the Marine Corps Combat Readiness Evaluation, “Iron Blitz,” at Camp Lejeune, N.C., Feb. 22, 2016. Iron Blitz is a weeklong, large scale operation and combat-readiness evaluation used to test the battalion’s ability to integrate all aspects of the Marine Air-Ground Task Force and function as a deployment-ready unit. (Marine Corps photo by Cpl. Shannon Kroening) - Maj. Gen. Walter L. Miller (right), commanding general of II Marine Expeditionary Force, speaks to Lt. Col. Robert Bodisch, commanding officer of 2nd Tank Battalion, 2nd Marine Division, about the progression of the Marine Corps Combat Readiness Evaluation, “Iron Blitz,” at Camp Lejeune, N.C., Feb. 22, 2016. Iron Blitz is a weeklong, large scale operation and combat-readiness evaluation used to test the battalion’s ability to integrate all aspects of the Marine Air-Ground Task Force and function as a deployment-ready unit. (Marine Corps photo by Cpl. Shannon Kroening)

A Marine with 3rd Battalion, 6th Marine Regiment advances down range during a battalion exercise at Camp Lejeune, N.C., Dec. 10, 2015. The battalion-wide exercise reinforced basic infantry skills and brought junior Marines up to optimal operability across the companies. (U.S. Marine Corps photo by Cpl. Paul S. Martinez/Released) - A Marine with 3rd Battalion, 6th Marine Regiment advances down range during a battalion exercise at Camp Lejeune, N.C., Dec. 10, 2015. The battalion-wide exercise reinforced basic infantry skills and brought junior Marines up to optimal operability across the companies. (U.S. Marine Corps photo by Cpl. Paul S. Martinez/Released)

Marines with 3rd Battalion, 6th Marine Regiment, make adjustments to the fire direction of the 60mm mortar during a live-fire training range at Camp Lejeune, N.C., Nov. 19, 2015. Despite heavy rainfall and wind, the Marines completed the mortar shoot in order to retain and refine their skills with the weapons system and prove they could complete a fire mission under any conditions. (U.S. Marine Corps photo by Cpl. Michelle Reif/Released.) - Marines with 3rd Battalion, 6th Marine Regiment, make adjustments to the fire direction of the 60mm mortar during a live-fire training range at Camp Lejeune, N.C., Nov. 19, 2015. Despite heavy rainfall and wind, the Marines completed the mortar shoot in order to retain and refine their skills with the weapons system and prove they could complete a fire mission under any conditions. (U.S. Marine Corps photo by Cpl. Michelle Reif/Released.)

Marines with 2nd Battalion, 2nd Marine Regiment lay in the prone while they set up a bangalore charge to destroy a wire trap during a demolitions exercise with 2nd Combat Engineer Battalion at Engineer Training Area 7 on Camp Lejeune, N.C., Sept. 22, 2015. Marines with 2/2 increased their proficiency and knowledge with various charges and techniques with the help of 2nd CEB. (U. S. Marine Corps photo by Cpl. Alexander Mitchell/released) - Marines with 2nd Battalion, 2nd Marine Regiment lay in the prone while they set up a bangalore charge to destroy a wire trap during a demolitions exercise with 2nd Combat Engineer Battalion at Engineer Training Area 7 on Camp Lejeune, N.C., Sept. 22, 2015. Marines with 2/2 increased their proficiency and knowledge with various charges and techniques with the help of 2nd CEB. (U. S. Marine Corps photo by Cpl. Alexander Mitchell/released)

Lance Cpl. William Emory, a mortarman with 1st Battalion, 8th Marine Regiment looks through the sight on the M224 60 mm Mortar Lightweight Company Mortar System during a 10-day long 60 mm Mortar Lightweight Company Mortar System (LCMS) course under the direction of the Division Combat Skills Center (DCSC) aboard Camp Lejeune, N.C., Aug. 10, 2015. The course began with classroom instruction over the weapons system in which they learned how to boresight, misfire procedures, and deflection changes for elevation before the unit moves into live-fire. (U.S. Marine Corps photo by Cpl. Krista James/Released) - Lance Cpl. William Emory, a mortarman with 1st Battalion, 8th Marine Regiment looks through the sight on the M224 60 mm Mortar Lightweight Company Mortar System during a 10-day long 60 mm Mortar Lightweight Company Mortar System (LCMS) course under the direction of the Division Combat Skills Center (DCSC) aboard Camp Lejeune, N.C., Aug. 10, 2015. The course began with classroom instruction over the weapons system in which they learned how to boresight, misfire procedures, and deflection changes for elevation before the unit moves into live-fire. (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) - 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)

Marines with Alpha Company, 2nd Combat Engineer Battalion, 2nd Marine Division, participated in a week-long, Counter-IED course aboard Camp Lejeune, N.C., March 2-5, 2015. The course included classes covering individual preparedness in an improvised explosive device environment, small unit leader considerations in an IED environment, homemade explosives and a metal detector operator’s course. (U.S. Marine Corps photo by Cpl. Krista James/ Released)  - Marines with Alpha Company, 2nd Combat Engineer Battalion, 2nd Marine Division, participated in a week-long, Counter-IED course aboard Camp Lejeune, N.C., March 2-5, 2015. The course included classes covering individual preparedness in an improvised explosive device environment, small unit leader considerations in an IED environment, homemade explosives and a metal detector operator’s course. (U.S. Marine Corps photo by Cpl. Krista James/ Released) 

Marines with 3rd Battalion, 2nd Marine Regiment, 2nd Marine Division disembark from a CH-46 Sea Knight helicopter to assault the Military Operations on Urban Terrain town at Fort A.P. Hill, Va., Sept. 11, 2014. The battalion utilized the training town in preparation for the unit’s upcoming Integrated Training Exercise later this year. - Marines with 3rd Battalion, 2nd Marine Regiment, 2nd Marine Division disembark from a CH-46 Sea Knight helicopter to assault the Military Operations on Urban Terrain town at Fort A.P. Hill, Va., Sept. 11, 2014. The battalion utilized the training town in preparation for the unit’s upcoming Integrated Training Exercise later this year.