While watching Scott McKay with Ann Vandersteel. https://rumble.com/vdtucj-patriot-streetfighter-interviewed-by-ann-vandersteel-on-the-steel-truth.html
I was scrolling through the comments and found one of the comments (reddogs) interesting, https://www.realchiefpolice.com/post/d-c-tunnels
Took a tour of Washington in 2000 and was given a personal tour by intern of our representative here in Colorado. He took us into the tunnels on the train that the congressman and senators use. I’m sure we weren’t taken on all of the tunnels because he said the tunnels run for miles and miles and miles under the city.
I believe this having lived there and used the train for years.