A nuclear submarine of either the United States or the Royal UK Navy likely test fired a UGM-133 Trident II D5 Submarine-Launched Ballistic Missile (SLBM) in the North Atlantic on September 21, 2025.

SAN FRANCISCO -- A bright light with a glowing tail spotted in the Central California sky on Tuesday was a Navy missile test that had been in the works for years. U.S. Navy spokesman John Daniels told ...

The U.S. Navy carried out four scheduled unarmed missile tests of the Trident II D5LE off the coast of Florida last week.

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