I think the USA and other nations have long had technology developed far beyond what we know (by normal engineering development - not aliens) and now some of the New World Order types would like to unveil this as alien technology. The goal is to subvert sovereign nations either by claiming aliens are a threat and we must band together under one leader or that alien life is superior and we should cede control to “higher life forms” in order to achieve peace.
What you describe could be described as “the great deception.”
“I think the USA and other nations have long had technology developed far beyond what we know (by normal engineering development - not aliens) “
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Trouble is that unveiling Zero Point Propulsion tech (something we’ve had for a very long time) would not only revolutionize travel on all scales, but would, in one swoop, basically end using any other sort of method for transportation and for power generation. Lots of resistance to its revelation is likely from various corporate empires, since the tech itself is relatively simple - homemade devices are not out of the question here.
Although, simple is relative and may be over the head of many on FR, since “it is impossible and therefore cannot exist,” despite being first described mathematically by James Clerk Maxwell in the 18th century. The really neat thing about this tech is, in the moment it is described, every one says “impossible,” dismissing it and the person talking about it, therefore the easier it becomes to keep the secret. Cool, eh?