U.S. Navy Engineman Third Class PETTY Officer William Mills, armed with an M4A1 Carbine, provides perimeter defense for the USN Cyclone Class Patrol Ship USS WHIRLWIND (PC 11), in the background, escorting the Navy's new Joint Maritime Staging Terminal in support of maritime security operations, through the Persian Gulf on Oct. 18, 2006. (U.S. Navy photo by Mass Communication SPECIALIST Second Class Justin K. Thomas) (Released)