Combat training

U.S. Sailors assigned to Maritime Expeditionary Security Squadron 9 clear a building during a Navy Expeditionary Combat Command (NECC) integrated exercise in San Diego, Calif., July 13, 2010. The exercise provides NECC personnel with realistic combat training in preparation for upcoming deployments. (DoD photo by Mass Communication Specialist 1st Class Carmichael Yepez, U.S. Navy/Released)