PACIFIC OCEAN (Oct. 2, 2016) USS Chafee (DDG 90) fires its Mark 45 5-inch lightweight gun off the starboard side during a Surface Warfare Advanced Tactical Training (SWATT) live-fire exercise with USS Princeton (CG 59) and USS Shoup (DDG 86) in the Southern California operating area. SWATT is a three-week exercise designed to tactically prepare cruisers and destroyers for carrier strike group integration. (U.S. Navy photo by Petty Officer 3rd Class William J. Blees/Released)