170421-N-PD309-014 CHANGI, Singapore (April 21, 2017) Lt. James Berry visually inspects an engine as the main propulsion assistant in preparation for Engineering Operations Certification aboard the littoral combat ship USS Coronado (LCS 4). Coronado is on a rotational deployment in U.S. 7th Fleet area of responsibility, patrolling the region's littorals and working hull-to-hull with partner navies to provide the U.S. 7th Fleet with the flexible capabilities it needs now and in the future. (U.S. Navy photo by Mass Communication Specialist 3rd Class Deven Leigh Ellis/Released)