There is no evidence that these extraterrestrial civilizations are hostile to humanity or the earth. Rather, the testimony shows that they are very concerned about nuclear and space-based weapons systems, and human warfare. Therefore, a cooperative world policy and law must be immediately established to prohibit the targeting and striking of these vehicles. Well, this is a can of worms. In the world of covert intelligence nothing is what it seems in this Looking Glass War.
Disinformation is a lie told as a truth.
Misinformation is a truth told as a lie or a fiction. In all of these things there is a mixture of disinformation and misinformation. Greer himself seems to make his living as another New Age Carny Fluff Head taking money from gullible people he keeps up all night trying to contact UFOs with flashlights and telepathic meditation like little pre-teen Cub Scouts round a midnight campfire with marshmallows crackling listening to ghost stories about the Booga Ooga Men. I do not know about the lineup of witnesses. Indeed, Colonel Phillip J. Corso was simply following General Mac Arthur's orders.