The US Navy has officially decided to retire the USS Boise, a nuclear-powered submarine, after nearly a decade of maintenance challenges and a series of costly overhauls that culminated in an estimated $3 billion price tag. The decision comes after the Navy spent approximately $800 million attempting to repair the vessel, which ultimately led to the cancellation of an overhaul approved under the previous administration. This marks a significant retreat for the Navy, which has faced criticism over the handling of the Boise and its maintenance issues. The USS Boise is now set to be mothballed, capping off years of delays and rising costs associated with its repair efforts.