Beginning of Exercise Sea Dragon between six nations including US.

According to information published by the U.S. Department of Defense on January 5, 2022, two U.S. Navy P-8A Poseidon aircraft from the “Golden Swordsmen” and “The Tridents” join Australia, Canada, India, Japan Maritime Self-Defense Force (JMSDF), and the Republic of Korea (ROK) to begin multinational exercise Sea Dragon 22.
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U.S. Navy's P-8A Poseidon maritime patrol aircraft (Picture source: U.S. Navy)

The P-8 Poseidon Maritime Patrol and Reconnaissance Aircraft (MPRA) with Patrol Squadron (VP) Forty-Seven and Twenty-Six, traveled to Andersen Air Force Base in Guam to hone their skills with members of the Royal Australian Air Force, Royal Canadian Air Force, Indian Navy, Japanese Maritime Self Defense Force, and Republic of Korea Navy.

Sea Dragon 22, primarily centering on anti-submarine warfare (ASW) training and excellence, culminates in over 270 hours of in-flight training; ranging from tracking simulated targets to the final problem of tracking a live US Navy submarine.

The Boeing P-8 Poseidon (formerly Multimission Maritime Aircraft) is an American maritime patrol aircraft developed and produced by Boeing Defense, Space & Security, modified from the 737-800ERX. It was developed for the United States Navy (USN).

The P-8 operates in anti-submarine warfare (ASW), anti-surface warfare (ASUW), and shipping interdiction roles.

It is armed with torpedoes, Harpoon anti-ship missiles, and other weapons, can drop and monitor sonobuoys, and can operate in conjunction with other assets, including the Northrop Grumman MQ-4C Triton maritime surveillance unmanned aerial vehicle (UAV).