My uncle was an engineer in the Air Force. Had Top Secret clearance. Always said that "we got them", referring to UFO/UAP technology.
Also, he told my cousins some stories of Shadow Creatures with bright red eyes that glowed in the dark.
When the MPs would begin to approach the creature, it would move super fast to the opposite end of the base and stand there waiting for the MPs to approach again.
They played that cat and mouse game all night.
My uncle died a number of years ago, and when the internet came around he had already said that the military was already using the internet back in the 60's. It was called Crypto back then.