The U.S. Navy’s top-priority program, the Columbia-class ballistic missile submarine, is in deep trouble. -The lead vessel, the future USS District of Columbia, is facing a new $1.7 billion cost ...

The US is moving two nuclear submarines to strategic positions, in an apparent Cold War-era threat that followed former ...

After commissioning, Helena conducted an interfleet transfer to the U.S. Pacific Fleet, arriving in Pearl Harbor, Hawaii, in ...