The United States is racing to field a new generation of nuclear-armed submarines, betting that a fleet of 12 of its largest ...

WASHINGTON - The Navy said Tuesday it is investigating about 30 senior sailors linked to alleged cheating on tests meant to qualify them to train others to operate naval nuclear power reactors.

HFIR reactor operators working from a motorized bridge use hand tools that are 30 feet long to work on the reactor core submerged in a pool 17 feet deep. Veterans of the U.S. Navy’s Nuclear Propulsion ...