I’m good friends with a guy whose company does major civil projects. Lots of underground and underwater things. Tunnels, bridges, you get the idea.
And that’s a fairly small community of an industry.
Some years ago playing golf, we were talking about the underground work that happened in DC after 9/11 around the Capitol complex. If you’ve been there since then, you know that the visitor’s center is underground. I think it might actually have been planned prior to 9/11.
He told me that there were classified federal underground projects happening as well - and that they were bigger than the Capitol project and not put out to bid. So his company wasn’t working on them.
Now…$21T is a preposterous number. I absolutely do not believe that. The entire cost of the Big Dig, even adjusted for inflation, would be something like $30B. And that was a massive excavation project.
But would I believe they have a big underground complex we don’t know about? Yes, I would.