170417-N-PD309-034 CHANGI NAVAL BASE, Singapore (April 17, 2017) Sailors aboard the littoral combat ship USS Coronado (LCS 4) participate in drills with members of the Engineering Training Team with Commander, Littoral Combat Ship Squadron One, in preparation for engineering operations certification. 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)