U.S. 3RD FLEET

Arleigh Burke-class guided-missile destroyer USS Jack H. Lucas (DDG 125), left, sails alongside Japan Maritime Self-Defense Force Kashima-class cadet training ship JS Kashima (TV-3508) and Hatakaze-class guided-missile destroyer JS Shimakaze (TV-3521) in the U.S. 3rd Fleet area of operations, Oct. 18, 2025. Jack H. Lucas is underway conducting operations with Kashima and Shimakaze, enhancing interoperability between allies and partners and demonstrating a bilateral commitment to a free and open Indo-Pacific. An integral part of the U.S. Pacific Fleet, U.S. 3rd Fleet leads naval forces in the Indo-Pacific and provides the realistic, relevant training necessary to execute the U.S. Navy's role across the full spectrum of military operations. U.S. 3rd Fleet works together with allies and partners to advance freedom of navigation and overflight, the rule of law and other principles that underpin security for the Indo-Pacific region. (U.S. Navy photo by Mass Communication Specialist 3rd Class Cory Cuskaden) Share

PHILIPPINE SEA

Philippine Sea (Nov. 20, 2025) – U.S. Navy Arleigh Burke-class guided-missile destroyer USS Rafael Peralta (DDG 115) transits the Philippine Sea, Nov. 20. Rafael Peralta is forward deployed and assigned to Destroyer Squadron (DESRON) 15, the Navy's largest DESRON and the U.S. 7th Fleet's principal surface force. (U.S. Navy photo by Mass Communication Specialist 1st Class Ryre Arciaga) Share

PACIFIC OCEAN

PACIFIC OCEAN (Oct. 30, 2025) – A U.S. Navy close-in weapon system (CIWS) fires during a live-fire exercise aboard Nimitz-class aircraft carrier USS Theodore Roosevelt (CVN 71), Oct. 30. Theodore Roosevelt, flagship of Carrier Strike Group (CSG) 9, is underway in the U.S. 3rd Fleet area of operations conducting advanced training to bolster strike group readiness and capability. (U.S. Navy photo by Mass Communication Specialist 3rd Class Adam Barnett) Share

PACIFIC OCEAN

PACIFIC OCEAN (Oct. 29, 2025)- U.S. Navy Sailors prepare a F-35C Lightning II, assigned to Strike Fighter Squadron (VFA) 86, to launch off the flight deck of Nimitz-class aircraft carrier USS Theodore Roosevelt (CVN 71), Oct. 29. Theodore Roosevelt, flagship of Carrier Strike Group (CSG) 9, is underway in the U.S. 3rd Fleet area of operations conducting advanced training to bolster strike group readiness and capability. (U.S. Navy photo by Mass Communication Specialist 3rd Class Adam Barnett) Share

At Sea

AT SEA (Nov. 18, 2025) – The Republic of Korea (ROK) Navy Chungmugong Yi Sun-sin-class destroyer ROKS Wang Geon (DDG 978), left, and Daegu-class frigate ROKS Daejeon (FFG 823), right, sail in formation aft of Arleigh Burke-class guided-missile destroyer USS Dewey (DDG 105) during the Maritime Counter Special Operations Exercise (MCSOFEX) with the ROK Navy, Nov. 18, 2025. Dewey is forward-deployed and assigned to Destroyer Squadron (DESRON) 15, the Navy’s largest DESRON and the U.S. 7th Fleet’s principal surface force. MCSOFEX is an exercise that promotes regional security cooperation, maintains and strengthens alliances, and enhances interoperability with the ROK Navy. (U.S. Navy photo by Mass Communication Specialist 2nd Class Oscar Diaz). Share

At Sea

251118-N-JJ672-1319 AT SEA (Nov. 18, 2025) – U.S. Navy and Republic of Korea Navy (ROK) Sailors discuss maneuvers aboard Arleigh Burke-class guided-missile destroyer USS Dewey (DDG 105) during the Maritime Counter Special Operations Exercise (MCSOFEX) with the ROK Navy, Nov. 18, 2025. Dewey is forward-deployed and assigned to Destroyer Squadron (DESRON) 15, the Navy’s largest DESRON and the U.S. 7th Fleet’s principal surface force. MCSOFEX is an exercise that promotes regional security cooperation, maintains and strengthens alliances, and enhances interoperability with the ROK Navy. (U.S. Navy photo by Mass Communication Specialist 2nd Class Oscar Diaz). Share

At Sea

251118-N-JJ672-1338 AT SEA (Nov. 18, 2025) – U.S. Navy Sailors and Republic of Korea (ROK) Navy Sailors collaborate on the bridge aboard Arleigh Burke-class guided-missile destroyer USS Dewey (DDG 105) during the Maritime Counter Special Operations Exercise (MCSOFEX) with the ROK Navy, Nov. 18, 2025. Dewey is forward-deployed and assigned to Destroyer Squadron (DESRON) 15, the Navy’s largest DESRON and the U.S. 7th Fleet’s principal surface force. MCSOFEX is an exercise that promotes regional security cooperation, maintains and strengthens alliances, and enhances interoperability with the ROK Navy. (U.S. Navy photo by Mass Communication Specialist 2nd Class Oscar Diaz). Share

At Sea

251118-N-JJ672-1212 AT SEA (Nov. 18, 2025) – U.S. Navy Quartermaster 2nd Class Tyler Northern stands watch aboard Arleigh Burke-class guided-missile destroyer USS Dewey (DDG 105) during the Maritime Counter Special Operations Exercise (MCSOFEX) with the Republic of Korea (ROK) Navy, Nov. 18, 2025. Dewey is forward-deployed and assigned to Destroyer Squadron (DESRON) 15, the Navy’s largest DESRON and the U.S. 7th Fleet’s principal surface force. MCSOFEX is an exercise that promotes regional security cooperation, maintains and strengthens alliances, and enhances interoperability with the ROK Navy. (U.S. Navy photo by Mass Communication Specialist 2nd Class Oscar Diaz). Share

At Sea

251118-N-JJ672-1259 AT SEA (Nov. 18, 2025) – The Republic of Korea (ROK) Chungmugong Yi Sun-sin-class guided-missile destroyer ROKS Wang Geon (DDG 978) travels aft of Arleigh Burke-class guided-missile destroyer USS Dewey (DDG 105) during the Maritime Counter Special Operations Exercise (MCSOFEX) with the ROK Navy Nov. 18, 2025. Dewey is forward-deployed and assigned to Destroyer Squadron (DESRON) 15, the Navy’s largest DESRON and the U.S. 7th Fleet’s principal surface force. MCSOFEX is an exercise that promotes regional security cooperation, maintains and strengthens alliances, and enhances interoperability with the ROK Navy. (U.S. Navy photo by Mass Communication Specialist 2nd Class Oscar Diaz). Share

At Sea

251118-N-JJ672-1232 AT SEA (Nov. 18, 2025) – The Republic of Korea (ROK) Chungmugong Yi Sun-sin-class guided-missile destroyer ROKS Wang Geon (DDG 978) travels aft of Arleigh Burke-class guided-missile destroyer USS Dewey (DDG 105) during the Maritime Counter Special Operations Exercise (MCSOFEX) with the ROK Navy Nov. 18, 2025. Dewey is forward-deployed and assigned to Destroyer Squadron (DESRON) 15, the Navy’s largest DESRON and the U.S. 7th Fleet’s principal surface force. MCSOFEX is an exercise that promotes regional security cooperation, maintains and strengthens alliances, and enhances interoperability with the ROK Navy. (U.S. Navy photo by Mass Communication Specialist 2nd Class Oscar Diaz). Share

At Sea

251118-N-JJ672-1291 AT SEA (Nov. 18, 2025) – The Republic of Korea (ROK) Navy Chungmugong Yi Sun-sin-class destroyer ROKS Wang Geon (DDG 978), right, and Daegu-class frigate ROKS Daejeon (FFG 823), left, sail in formation alongside the Arleigh Burke-class guided-missile destroyer USS Dewey (DDG 105) during the Maritime Counter Special Operations Exercise (MCSOFEX) with the ROK Navy Nov. 18, 2025. Dewey is forward-deployed and assigned to Destroyer Squadron (DESRON) 15, the Navy’s largest DESRON and the U.S. 7th Fleet’s principal surface force. MCSOFEX is an exercise that promotes regional security cooperation, maintains and strengthens alliances, and enhances interoperability with the ROK Navy. (U.S. Navy photo by Mass Communication Specialist 2nd Class Oscar Diaz). Share

At Sea

251118-N-JJ672-1281 AT SEA (Nov. 18, 2025) – The Republic of Korea (ROK) Sejong the Great-class guided-missile destroyer ROKS Seoae Ryu Seong-ryong (DDG 993) travels alongside Arleigh Burke-class guided-missile destroyer USS Dewey (DDG 105) during the Maritime Counter Special Operations Exercise (MCSOFEX) with the ROK Navy Nov. 18, 2025. Dewey is forward-deployed and assigned to Destroyer Squadron (DESRON) 15, the Navy’s largest DESRON and the U.S. 7th Fleet’s principal surface force. MCSOFEX is an exercise that promotes regional security cooperation, maintains and strengthens alliances, and enhances interoperability with the ROK Navy. (U.S. Navy photo by Mass Communication Specialist 2nd Class Oscar Diaz). Share