Navy Petty Officer 3rd Class Sergio Fernandez signals an MH-60S Knighthawk helicopter aboard the guided missile destroyer USS Stockdale during a Cruiser-Destroyer, Surface Warfare Advanced Tactical Training exercise in the Pacific Ocean, April 17, 2018. Fernandez is a boatswain's mate. Stockdale is one of three warships from the USS John C. Stennis Carrier Strike Group completing a SWATT exercise, designed to increase warfighting proficiency, lethality and interoperability of participating units. Navy photo by Petty Officer 2nd Class Amanda A. Hayes