U.S. Marines brace themselves during urban mobility breaching training as part of the Infantry Assault Course on Marine Corps Base Camp Pendleton, Calif., Jan. 16. - U.S. Marines brace themselves during urban mobility breaching training as part of the Infantry Assault Course on Marine Corps Base Camp Pendleton, Calif., Jan. 16.

U.S. Marines walk off the bus to start their check-in process for Marine Combat Training at the School of Infantry - West on Camp Pendleton, Calif., March 6, 2018. This marks the first male-female integrated Marine Combat Training company on the West Coast. - U.S. Marines walk off the bus to start their check-in process for Marine Combat Training at the School of Infantry - West on Camp Pendleton, Calif., March 6, 2018. This marks the first male-female integrated Marine Combat Training company on the West Coast.