“I’ve been trying to get permission to attend courts-martial in Massachusetts and Connecticut....”
Go to the base visitor’s center. It’s usually just outside the gate. Explain the situation. They’ll take your DL and issue you a day pass. If you have a VA ID card they may take that. Unless you have a service related ID card (VA, DoD medically retired etc.) you likely don’t qualify for a base access type ID. So just do the day passes. Same way civilians do it.
If I'm allowed to enter I assume that they won't allow my car on base so I'll just have to find someplace not too far from the gate. I just hope that when they "wand" me they believe that I have two metal hips. I've never had a problem at airports.