I've read your link too ack, and few more on the matter which Ron started this new thread from that high-end pdf article on astro physics by the Defence Intelligence Agency.
I don't think we have physicists here @ WBF who can come up with better explanations than the good ones already online.
It's an interesting subject, way beyond our level of expertise.
Nonetheless it's worth exploring and discussing to learn even more.
Everything is important.
* @ one point it did cross my mind about the incident of few years ago @ the US and Canadian embassies when several ambassadors felt severely ill and required medical attention.
I think we all have heard of this incident. It is probably not physically related to this more serious subject but just something that did cross my mind briefly.
UFO and aliens I simply don't believe in. Star Trek's warpdrive is fun for the fiction, but in real life man might need few more billion years to remotely approach this possibility, I think.
...Same for manipulating extra dimensions. It's very interesting though, and I like the studies from the Large Hadron Collider (LHC). ...How did the universe start.
It reminded me of the film 'Interstellar' by Christopher Nolan.
In China they developed the most advanced AI chip; in regards to telecommunications.
...From the company Huawei, the Ascend 910 chip.
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https://artificialintelligence-news.com/2019/08/23/huawei-ai-chip-mindspore-framework/
So technologically we are constantly exploring; be it about space, communications, extraterrestrial, audio, extra dimensions, speed travel (a Frenchman recently crossed a river, 22 miles, from jet propulsion boots with a fluid tank in his back pack and going fast), warp drive.
I'm sure some of you have heard about that recent exploit from the Frenchman, it's a world record.
The more we read the more it seems unobtainable; in regards to that pdf link Ron shared.
It makes for out of reach physicist scientist discussions beyond mere mortals, I think.
NASA scientists might know more ...
The CIA? I have zero clue, it's a secret organization.
I'm wearing a bullet-proof/fire-proof flamesuit just in case.