Sgt. William J. Puckett, an assault amphibious crew chief with Alpha Company, 2nd Assault Amphibian Battalion, 2nd Marine Division, watches from the turret of his AAV as Marines with his unit conduct a Gator Square after disembarking from the USS Whidbey Island off the coast of Camp Lejeune, N.C., Sept. 10, 2014. Alpha Company Marines spent two days on Onslow Beach testing their AAV’s before taking them out to sea to board the USS Whidbey Island in order to conduct ship operations. (U.S. Marine Corps photo by Lance Cpl. Justin Updegraff / Released) - Sgt. William J. Puckett, an assault amphibious crew chief with Alpha Company, 2nd Assault Amphibian Battalion, 2nd Marine Division, watches from the turret of his AAV as Marines with his unit conduct a Gator Square after disembarking from the USS Whidbey Island off the coast of Camp Lejeune, N.C., Sept. 10, 2014. Alpha Company Marines spent two days on Onslow Beach testing their AAV’s before taking them out to sea to board the USS Whidbey Island in order to conduct ship operations. (U.S. Marine Corps photo by Lance Cpl. Justin Updegraff / Released)

Corporal William Jacobsen, an assault amphibious vehicle crewman, fires his M4 Carbine down range with a group of Marines who scored the highest at the range earlier in the day at Fort A.P. Hill, Va., Sept. 2, 2014. The Marines spent the entire day shooting an unknown distance range with the M4 Carbine and the M249 squad automatic weapon to better themselves at estimating distances and eliminating a target. (U.S. Marine Corps photo by Lance Cpl. Justin Updegraff / Released) - Corporal William Jacobsen, an assault amphibious vehicle crewman, fires his M4 Carbine down range with a group of Marines who scored the highest at the range earlier in the day at Fort A.P. Hill, Va., Sept. 2, 2014. The Marines spent the entire day shooting an unknown distance range with the M4 Carbine and the M249 squad automatic weapon to better themselves at estimating distances and eliminating a target. (U.S. Marine Corps photo by Lance Cpl. Justin Updegraff / 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.

Marines with 3rd Battalion, 2nd Marine Regiment, fire on a mock enemy bunker and provide suppressive fire for an assault team during a live-fire exercise on Range P28 aboard Fort A.P. Hill, Va., Sept. 5. The range was built specifically for the unit as a training aid to increase overall unit readiness. (U.S. Marine Corps photo by Cpl. Jorden M. Wells / Released) - Marines with 3rd Battalion, 2nd Marine Regiment, fire on a mock enemy bunker and provide suppressive fire for an assault team during a live-fire exercise on Range P28 aboard Fort A.P. Hill, Va., Sept. 5. The range was built specifically for the unit as a training aid to increase overall unit readiness. (U.S. Marine Corps photo by Cpl. Jorden M. Wells / Released)