US Navy’s Virginia-class fast-attack submarine has returned to the fleet ahead of schedule. The nuclear-powered USS Colorado (SSN 788) was undergoing scheduled maintenance at the Pearl Harbor Naval Shipyard (PHNSY) and the Intermediate Maintenance Facility (IMF). The submarine completed its maintenance 29 days ahead of schedule on June 10. It has rejoined the fleet and is now ready to serve in the Submarine Squadron 7 to ensure dominance in the …