Recent News
A Vanilla unmanned aerial system (UAS), from the Office of the Under Secretary of War for Research and Engineering, takes flight during the annual Fleet Experimentation (FLEX) 2026 event in Key West, Florida, April 26, 2026.

Navy’s unmanned vessels key to $81 million cocai...

News
Jun. 03, 2026

U.S. Naval Forces Southern Command and U.S. 4th Fleet’s investment in advanced robotic and autonomous systems...
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Rear Adm. Carlos Sardiello, commander of U.S. Naval Forces Southern Command/U.S. 4th Fleet, addresses Argentine Sailors aboard MEKO 360H2-class destroyer ARA La Argentina (D 11) during a ship tour at Puerto Belgrano Naval Base, Argentina, May 18, 2026.

U.S. 4th Fleet Commander Strengthens Maritime Pa...

News
May. 27, 2026

Senior naval leaders from the United States and Argentina convened at Puerto Belgrano Naval Base, Argentina...
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U.S. Marine Gen. Francis L. Donovan, commander of U.S. Southern Command and Rear Adm. Carlos Sardiello, commander of U.S. Naval Forces Southern Command/U.S. 4th Fleet, along with senior executive services representatives and partner nation officials stand for a group photo during FLEX 2026 on April 29, 2026.

FLEX 2026

News
May. 01, 2026

U.S. Naval Forces Southern Command / U.S. 4th Fleet (USNAVSOUTH/4th Fleet) successfully concluded its annual...
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Rear Adm. Carlos Sardiello, commander of U.S. Naval Forces Southern Command/U.S. 4th Fleet, left, signs a memorandum of agreement as Vice Adm. Juan Ricardo Rozo Obregón, commander of the Colombian Navy, observes during the United States - Colombia Maritime Staff Talks closing ceremony March 27, 2026 in Cartagena, Colombia. Sardiello, led the U.S. delegation for the annual Maritime Staff Talks, reaffirming the enduring partnership between the two nations and outlining a path for future collaboration in the maritime domain. U.S. Naval Forces Southern Command/U.S. 4th Fleet serves as a trusted maritime partner for Caribbean, Central, and South American maritime forces, working to promote unity, security, and stability throughout the region.

U.S. and Colombian Navies Reinforce Partnership ...

News
Mar. 30, 2026

Senior naval leaders from the United States and Colombia convened in Cartagena from March 24-27, 2026 for the...
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