Former Pentagon official and apparent UFO whistleblower Luis Elizondo said in a recent interview that many UFOs encountered by U.S. military personnel over the years were advanced beyond human technological knowledge, thus making it impossible for the objects to have been manufactured in rival countries like China or Russia. Also, getting too close to UFOs can be dangerous to your health. Also, is Luis Elizondo on a secret mission for the U.S. government to help prod forward its apparent slow disclosure effort? Finally, there's been a cold war ongoing for decades between the world's most powerful countries to reverse-engineer recovered alien technology.
Link to GQ article: Luis Elizondo ran the Pentagon's secretive UFO programme for a decade. We had some questions | British GQ (gq-magazine.co.uk)
UFO - Extraterrestrial Reality