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YOKOSUKA, Japan (Feb. 15, 2023) Sailors from the U.S. Navy, Japan Maritime Self-Defense Force (JMSDF), and Royal Australian Armed Forces from the Australian Headquarters Joint Operations Command (HQJOC) from the Australian Headquarters Joint Operations Command (HQJOC) pose for a photo following the trilateral theater anti-submarine warfare (TASW) tabletop exercise (TTX) at Commander, Fleet Activities Yokosuka. The TTX was held to improve information sharing, coordination, and communication between the three countries and across all domains of undersea warfare. (U.S. Navy photo by Mass Communication Specialist 2nd Class Arthur Rosen)