@johnbishop It was the aircraft carrier Yorktown. It was impressive despite its age, and it was huge! I can't begin to remember how many flights of stairs we went up and down.
There was also a warship there but we couldn't find the name of it. That was much smaller and less impressive but it had a video that we watched simulating a possible attack, and then the submarines coming in our direction turned around.
There was also a small area devoted to the Vietnam experience but that was not really that impressive. It was unseasonably hot there, up to 90 degrees, and sunny, so we both ended up buying hats to shield our faces a bit.
Jane