Robert, in response to your inquiry, here is what I can offer:
My overview here below from 15 October 2019 contains a lot of good info: and this page contains a summary of key points:
This recent interview of me on these subjects has gotten a lot of good reviews:
Several years ago I published the following that is a summary as well:
This is the “Grandfather” of all conspiracy theories in regards to Ufology, ET, and everything “Alien”. The famed “Roswell Crash of 1947” is just the “tip of the iceberg”. The Prophesies of Revelation, Daniel, and Ezekiel are playing out before our eyes today, before the eyes of THIS generation TODAY! In view of the current environmental, social, political, and economical atmosphere that permeates every culture of this world, you must be able to see the BIGGER picture; the entire spectrum, if you will, not just one color. And that spectrum goes far beyond what anyone could have ever perceived possible. It goes beyond science fiction. Hollywood couldn’t even have conceived the reality of Hell ON, BENEATH, or ABOVE Earth. But rest assured, they will damned sure try to convince you otherwise. With that said, don’t even try to imagine what is between the covers of this manuscript. You have to read it for yourself.
Phi Beta Iota: Some readers believe the above is very similar to The Branton Files, written by Bruce Alan Walton (Branton), in the 90s, free online.
And regarding someone who is something of an expert on DUMBS: Richard Sauder, here is his About page:
His info about underground and undersea bases is solid.