I remember just before the Anthrax hit, they did a big show about Ft. Detrick.
None of this stuff is all that secret. You can go to the Titan Missile Museum outside Tucson and walk through an old silo and go through a simulated launch and learn about a good chunk of the systems for under $10. If you’re willing to drop a couple hundred you can do the “behind the scenes” tour, heck you can even spend the night. Yeah it’s all old stuff, but a lot of the concepts (the communications array, the construction of the silo) haven’t changed much. Deterrence weapons aren’t built around secrets, they’re built around openness.