I guess it was inevitable during these budgetary tough-times that the Navy would be talking about laying-up major combatant vessels pre-maturely.
The USS Nimitz was delivered to the Navy in 1975, the USS George Washington, was built by Newport News Shipbuilding and was commissioned 4 July 1992. While I disagree with scraping any carrier group. I would pick a carrier that was 17 years older! I would then use the Nimitz carrier as a training platform at Pensacola NAS.
The Navy does not have enough trained personnel to operate the carriers we already have. Interestingly enough, the Navy has more Admirals than it has ships.