Company B, 1st Battalion, 4th Marines, security overwatch...pic by Lance Cpl. Timothy Valero

Marine with Company B, 1st Battalion, 4th Marines, provides security overwatch as Amphibious Assault Vehicles pass below after conducting an amphibious landing during Co. B’s Marine Corps Combat Readiness Evaluation aboard Marine Corps Base Camp Pendleton, Calif., March 29, 2016. After the amphibious landing, the Marines made their way toward a combat town, where they assaulted through the urban environment.