170422-N-PD309-081 CHANGI, Singapore (April 22, 2017) Fire Controlman 1st Class Richard Byrd checks the integrity of the deck in a main engine room during a drill 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 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)