Was just discussing almost all of this last night with the wife. Thanks for this to confirm our discussion. Who really knows?

A relative was involved in a lot of tech projects, some in Dubai in his later years. He discussed ET extensively. He also mentioned about many years ago most of what is contained in this post you linked.

That people would also be hired on 'tours' underground and there was no outside communication. These tours might be short, or multi-year contracts. Those contracts weren't legal above ground, but if you wanted payment you followed it and there is no leaving. Everything was compartmentalized, and the 'real' research was done by lifers. People who literally left the surface for good, or were never on it.

The facility he was aware of was tiered as well. The lower you went the more 'advanced' and illegal the research.

It was just a single conversation on that topic and he's dead now. To be fair, I was skeptical of most everything he said. However, he kept getting large contracts for crazy tech. I won't mention the tech because it would be easy to back trace.