So here I am in Hawaii looking for old military sights that I can climb around in while on vacation. I came accross a website that is of great interest in my quest and has information on places in the rest of the United States for anyone else who may be interested.
Coastal Defense Survey Group
Specifically for Hawii on the island of Oahu where Pearl Harbor is I found this map with general locations of the military forts and installations.
Oahu coastal defences
After I get away from the family to take some pictures I will post them.