Could you point me to any UFO wistleblower from govenment, military, science, etc. areas that revealed exact technical details about UFO. I mean really technical - not somehing like "it could hover silently!" or "It could turn at 90° at high speed!" or senseless drawings or descriptions of exterior or interior. Something like exact weight, power source output in Watts, maximum thrust in kN, something like "Power source connected to the engine with a cable/pipe/whatever with diameter/cross-section of ... <- exact value"? Anything like that?
First thing that engineer, scientist, military will do with unknown technology is to measure it. And it is not about dimentions, it is about all possible parameters. Also he definitely will try to find and write out distinct parts interconnections and think out a way to categorise different distinct parts, even if he have no clue what it is and how it works. And that are the things that any real whistleblower from aforementioned institutions will wistleblow. They just can't be unaware of that things if they really tried to use, work on, reverse engineer or study that UFOs.
What I find very suspisious, apart of complete absense of known technologies that appeared from nowhere without any traces of preceding technologies, is that there are no any technical details about UFOs governments presumably possess from any known to me wistleblower.
I don't think those who manage whole projects will ever talk. So that's not about them. It is about stuff who have to know something. And such project, like studying alien UFO need a lot of stuff. And you can't hide technical things from them. And that technical things should be non-human too.
If you ever talk with somebody who is from complete another sphere, IDK, say, sailor or pilot f.e. you might have noticed that they occasionally tell things that have no real meaning in your converstion. They just spill them and hardly notice that. Tiny bits of technical information that are usual things for teller, but not for listener. It just happens.
But this things are very important if you want to check if your buddy tell truth. Presence of suach things is a good sign. At least your interlocutor highly probably really have some connection to the topic he tell about. But much more important is a combination of that things. If a sailor tell you that the scene of his story is on the ship with cruising speed of 25 knots and later during the story you get that they sail 3 hours to cover 75 sea miles, then at least you could get that he really knows things. If there is something inconsistent, then he is lying.
It is uncontrollable, everybody do that, you, me, that sailor, IT guy from above floor, just nobody notice that. Those who tell don't notice because it is their life, those who listen don't notice because it is irrelevant for them.
So with UFO stuff. If a person who tell story how he work decades on UFO project and does not occasionally spill a single technical breadcrumb, then it is a 100% liar.
But if he do, then it is a very good reason to listen him more carefully.
Say, if a wistleblower spill in different parts of his story that ship weights 3 ton, then that it have an energy storage of 250kWh, and later that one third of a ship is a power source, then there is nothing advanced or alien in it, because 250Wh/kg is a power density of a modern Lithium battery. If he never saw it flying more than few minutes, then we could conclude that with high probability he is selling you some large copter. Or, if the numbers are consistent, but are completely out of anything known to humans, then, that could be something really interesting.
Of course, that small tech details is not a solid proof of anything, but a complete absense of them is a bright flashing indicator that teller is a liar.
I'm really not sure what you're asking or trying to achieve here. Are you asking for legit people/information or are you trying to say those that have come forward are liars because they did not supply said information you are looking for? I'm genuinely confused, so please forgive me.
I'm asking if anybody know about any UFO whistleblower who along with his story about working with UFO occasionally mentioned any real technical details.
I assume that all whistleblowers I know about are liars because none of them spilled anything that person who really worked on UFO or its parts should occasionally mention, because that is how people talk about things they know professionally.
May be, I am just unaware about such person, so I want to read his revelations and may be find something interesting.
I assume that people usually just do not notice that tiny bits of professional knowledge in someone story, until you point it, or ask them about it, so my request for comments in hope that somebody recall something like that and share a link or something.
Okay, so now we are back to point blank and my original comment. I don't think you're going to find what you are specifically looking for. Not sure if we are lost in translation or something.