I live in the Lower Keys and only 25 miles from Key West. I'm a certified diver, however I have not dived on the Vandenberg yet.
I worked for the Military Sealift Command (MSC), and worked on a number of ships at Port Canaveral back in the early 90's. I served on the Vandenberg.
Since it was used as missile tracking ship, we used to carry many VIP's out to watch Shuttle launches. While I was aboard, I saw a 3:00 am launch of a shuttle from 2.5 miles off the Cape. What an exciting thing it was. When the engines fired, it was like air being sucked out of my lungs. It also became daylight for a few minutes. What a view for many minutes.
I am very much looking forward to when I can stand on the deck where I stood for the shuttle launch about 33 years ago.
If you are a diver, this is a must do dive. Perhaps I'll join you.