Mitchell grew up in Roswell , New Mexico , which some UFO believers maintain was the site of a UFO crash in 1947 . He says governments are concealing evidence that extraterrestrials exist . Score: 7 Mitchell : Roswell residents `` told not to talk about their experience '' by military .
He says governments are concealing evidence that extraterrestrials exist . Score: 7 Mitchell : Roswell residents `` told not to talk about their experience '' by military .