The United States Coast Guard was formed by an act passed by the US Congress.
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The Soviets shot down the plane of an American CIA agent, and the pilot was sentenced to 10 years in prison.
The USS Holland (SS-1) became the first modern submarine commissioned for the United States Navy.
The US Navy commissioned USS Nautilus, which became the world’s first nuclear submarine.
Former US Army Private Chelsea Manning was convicted on 17 espionage charges.
The US military policy "don't ask, don't tell" came to an end.
