I was touring the facility with the then education director KT and Margy and noticed the exhibit shown above (The Battle of Ni'ihau). I made a comment about how I don't think the Smithsonian would ever allow use of barbed wire as an exhibit barrier like they had. KT told me to go ahead and touch it. While it appears that the exhibit is separated from the public with barbed wire, the barbs are actually rubber.
The only thing I really regret about visiting that museum is that Margy and KT talked so long, I missed the sign up for the last boat out to the Arizona. On our next trip to Oahu, we did that first (in fact, they had seats available on the next boat out).
The Arizona continues to leak fuel oil. You see small drops of it rise to the surface: