Possible that a lot of these underground DUMBS aren't just rape chambers.
Could be phase arrays of brainwashed kids with certain DNA.
Like a complex remote viewing apparatus feeding off of people literally trapped in the matrix.
Army Intel has their own program, some possibly used to protect POTUS from out-of-body spying/attacks.
Third Eye Spies Documentary:
https://www.youtube.com/watch?v=iBokQomPr_g