the engineers I have known have been top flight blokes.
I don’t know that the Roswell thing was crashed because of a change in our radar stuff that was unanticipated . . . that’s just an assertion made by a researcher or 3.
I suspect some of your assumptions are more farfetched than that.
You should know that things are extremely compartmentalized.
And, that textbooks are willfully lying.
But, hey, enjoy your construction on reality as long as you can.
Things are in a flux.