How could the US Navy use an Alaska-class cruiser appearing in the modern day?
Short answerAs a modernised status ship with VLS, helicopters, and new machinery; nuclear conversion would be too close to building a new ship.
NotesThe panel would retain Alaska's forward gun turrets while removing much of the old superstructure and stern equipment. The rebuilt ship could receive a vertical-launch system, modern gas turbines, sensors, and facilities for helicopters. That would create a conspicuous status ship able to visit places where deploying a carrier would be excessive. A nuclear conversion is rejected because it would require rebuilding so much of the hull that a new ship would make more sense. Successful service could nevertheless reopen the argument for a purpose-built nuclear cruiser with ample electrical power for future weapons.