Good point Tom.
The Enterprise is on it's last mission and will be retired this December about three years earlier than the original schedule. USS GR Ford was scheduled to replace her. She could sit in mothballs for years while they remove the reactors, turbines and all of the nuclear piping on board. She could sit in Bremerton, WA for awhile before that happens as we'll be down a carrier for the better part of three years due to budget cutbacks. She could be put back into service in pretty short notice if needed.
With this Admin, there may be further cutbacks, including not building CVN-80!