Dugway Proving Ground is the new Area 51, that's where all the possibly alien reverse engineered craft and weapon systems are being tested. Everything is underground and the corporations that are using it is classified, for what purpose they are using Dugway is also classified. That's where all the extremely high tech toys are tested and not in Area 51 anymore. Dugway Proving Ground is Area 52.
"You cannot rule out the possibility that an extraterrestrial civilization perhaps a million years more advanced than ours has the capability of reaching the planet Earth." ~ Dr. Michio Kaku