Topic - U.S. Southern Command

U.S. Southern Command said the USS Helena, a nuclear-powered fast attack submarine, pulled into the waters near the U.S. base in Cuba on Thursday, just a day after a Russian frigate, a nuclear-powered submarine, an oil tanker and a rescue tug crossed into Havana Bay after drills in the Atlantic Ocean.

US nuclear sub pulls into Guantanamo Bay after Russian fleet arrives in Cuba →

U.S. Southern Command said, meaning that the effort involved helicopters.

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