Flugzeugträger U.S.S. Georgetown

"USS Vandegrift FFG 48 which is a Parry class frigate."

No, the USS VANDERGRIFT is an OLIVER HAZARD PERRY class frigate, and the word "Parry" doesn't have anything to do with it. Besides that, the Secretary of the Navy is a proper noun, and it is capitalized, instead of the uncapitalized way that he wrote it.

The TV series was awful, but that still does not justify writing "Parry" instead of OLIVER HAZARD PERRY. The real Oliver Hazard Perry was the largest naval hero of the War of 1812, and he won the Battle of Lake Erie, giving the United States control of that Great Lake during the war. Oliver Hazard Perry was also the father of the naval hero Matthew Perry of the 1850s.