CAMP LEJEUNE, N.C. (Oct. 19, 2021) U.S. Marines with 1st Battalion, 2d Marine Regiment, 2d Marine Division, prepare to conduct an amphibious insertion on Camp Lejeune, N.C., Oct. 19, 2021. The Marines participated in amphibious and company-level infiltration across multiple locations as part of Strip Map, a specialized evaluation used to determine the efficacy of experimental ground formations. (U.S. Marine Corps photo by Cpl. Elijah J. Abernathy)