180420-N-CF658-267 PACIFIC OCEAN (April 20,2018) The guided-missile destroyer USS Stockdale (DDG 106) fires its Mark 46 lightweight torpedo during a cruiser-destroyer surface warfare advanced tactical training (SWATT) exercise. SWATTs are designed to increase warfighting proficiency, lethality, and interoperability of participating units. Stockdale is deployed with the John C. Stennis Carrier Strike Groupin the Indo-Pacific region. (U.S. Navy photo by Mass Communication Specialist 2nd Class Amanda A. Hayes/Released)