Marines with 7th Engineer Support Battalion, 1st Marine Logistics Group, deploy concertina wire between buildings during a night raid training operation conducted as part of the Composite Training Unit Exercise aboard Camp Pendleton, Calif., July 16, 2013. The role-players deployed improvised explosive devices and concertina wire around and inside buildings at Bravo-3 combat town to provide infantrymen attached to the 13th MEU an immersive and realistic experience.