Soldiers with 7th Singapore Infantry Brigade and Marines with 1st Battalion, 5th Marine Regiment devise a reaction strategy in case of simulated Improvised Explosive Device attacks during exercise Valiant Mark aboard Marine Corps Base, Camp Pendleton, Calif., Dec. 6, 2014. Valiant Mark enhances U.S. and Singaporean forces’ combined combat readiness through live-fire and urban terrain training as well as amphibious operations familiarization. (U.S. Marine Corps photo by Lance Cpl. Danielle Rodrigues) - Soldiers with 7th Singapore Infantry Brigade and Marines with 1st Battalion, 5th Marine Regiment devise a reaction strategy in case of simulated Improvised Explosive Device attacks during exercise Valiant Mark aboard Marine Corps Base, Camp Pendleton, Calif., Dec. 6, 2014. Valiant Mark enhances U.S. and Singaporean forces’ combined combat readiness through live-fire and urban terrain training as well as amphibious operations familiarization. (U.S. Marine Corps photo by Lance Cpl. Danielle Rodrigues)