U.S. Marines and Sailors from 1st Battalion, 1st Marine Regiment, demonstrate amphibious landing capabilities during Steel Knight 2017 at Camp Pendleton, Calif., December 4, 2016. The distinct ability of the Marine Corps to gain access to critical areas anywhere in the world through air, ground and maritime capabilities enables us to aid our nation in efforts to resolve conflict, conduct humanitarian assistance or engage our nation’s enemies in remote, austere environments. (U.S. Marine corps photo by Lance Cpl. Skyler E. Treverrow/Released)