According to Lazar, Groom Lake isn't where they are testing UFOs... Groom Lake is for actual aircraft. The UFOs are supposedly out of a hangar
facility near the Papoose dry lake bed, not Groom. It's still part of the A-51 complex, but it's actually quite far from the base proper. And
it's the aircraft that would serve as a cover for the UFOs, not vice-versa...
That base has had the same mission objective for over half a century. It wouldn't still be in use if that objective was somehow compromised...but
JANET flights and the tinted buses continue...