Security Stare A Marine provides security during a simulated amphibious assault on Red Beach at Camp Pendleton, Calif., April 13, 2017. The Marine is assigned to Battalion Landing Team 1st Battalion, 5th Marine Regiment, 15th Marine Expeditionary Unit. Marine Corps photo by Cpl. Frank Cordoba SHARE: Download: Full Size (0.49 MB) Credit: Cpl. Frank Cordoba VIRIN: 170413-M-DJ953-0138C.JPG Photo Gallery