Concur. Brennan is indeed a puppet. My sense is the puppeteers are (or were) Saudi. Most likely Dopey. I think this because of his large financial stakes in MSM and social media.
The largest of those bunkers are pre-cabbed by the builder and then transported to the construction site by truck. The loads are so wide they must have a highway escort.
For your theory to be correct, the pre-fab sections would have had to been transported to a port facility (Mobile would be closest) and loaded on to barges and towed all the way to Little St James by tugboat. Once at the destination they would have to be unloaded from the barge by crane, placed on another heavy duty trailer and pulled to the burial site. That's a huge operation that would have been noticed by someone.
I believe anything underground on Little St James is more likely to be poured, reinforced concrete. The logistics are so much easier to deal with and would raise less suspicion. Just my two cents.
Agree that is a possibility. Any WWII construction would be in Army Corps of Engineers records and easily verified.