Private Zach Cunningham, a mortarman serving with Echo Company, 2nd Battalion, 5th Marine Regiment, and Lance Cpl. Kevin Tan, a rifleman serving with 3rd Battalion Singapore Guards, provide security as their squad clears a building while conducting military operations in urban terrain training during Exercise Valiant Mark here, Dec. 5, 2012. Cunningham, a 20-year-old native of Chico, Calif., and Tan, a 20-year-old native of Singapore, provided suppressive fire as the Marines and guardsmen of their squad moved from building-to-building to secure their objective. Valiant Mark is an annual exercise that improves the ability of Marines to train and operate with their allies in the Pacific.

(Official U.S. Marine Corps photo by Lance Cpl. Corey Dabney)