marines from company c, 1st battalion, 2nd marine regiment, on a company-sized exercise at the u.s. army yuma proving ground in arizona, oct. 27, 2009. the camp lejeune, n.c.-based battalion spent approximately one month the yuma area, making use of its surroundings' rocky, mountainous terrain in preparation for a deployment to afghanistan early next year. the exercise stressed the approximately 220-marine force to use combined arms tactics, ranging from rifles and machine guns to mortars and tow missiles.(photo by cpl. pete zrioka usmc)