query: What are the fleets of the US Navy?
passage: List of fleets
United States Second Fleet (HQ Norfolk, Virginia) - Homeland Defense and North Atlantic Ocean. United States Third Fleet (HQ San Diego, California) – East Pacific United States Fourth Fleet (HQ Mayport, Florida) – South Atlantic United States Fifth Fleet (HQ Manama, Bahrain) – Middle East United States Sixth Fleet (HQ Naples, Italy) – Europe United States Seventh Fleet (HQ Yokosuka, Japan) – West Pacific United States Tenth Fleet (HQ Fort Meade, Maryland) – Reactivated as Fleet Cyber Command. Formerly anti submarine warfare coordinating organization.
passage: History of the United States Navy
An unlikely combination of Navy ships fought in the Vietnam War 1965–72; aircraft carriers offshore launched thousands of air strikes, while small gunboats of the "brown-water navy" patrolled the rivers. Despite the naval activity, new construction was curtailed by Presidents Johnson and Nixon to save money, and many of the carriers on Yankee Station dated from World War II. By 1978 the fleet had dwindled to 217 surface ships and 119 submarines.