Take a close look at some of the things the videographer shows us. There is an observation tower there with a steel dome — with bulletproof glass!

Although we see holes in the structure, the underground plant can be closed off. In that way, it will be resistant to chemical warfare agents by using the ventilation system unit which was installed in the 1980s.

It would be an interesting undertaking for a survivalist to get the permits to retrofit this bunker. One day in the near or far future it could do plenty of good as a bug-out home for a great many people.