Exercise Valiant Mark. U.S. Marine expeditionary force

U.S. Marine Pfc. Aaron Schwartz, a team leader for weapons platoon from Company A, 1st Battalion 7th Marines, teaches a member of Company C, 1st Battalion Singapore Guards, how to properly utilize the 240B light machine gun as part of Exercise Valiant Mark here in Singapore, Sept. 19, 2011. Exercise Valiant Mark, in its 10th iteration, is an annual exercise conducted by U.S. Marines and the Singapore Armed Forces in order to maintain a high level of interoperability, enhanced military to military relations and to enrich mutual combat capabilities through combined training. Schwartz, 20, is a Fort Worth, Texas native. (Official Marine Corps photo by Cpl. Preston Reed)