Bob Lazar is a physicist who worked at Los Alamos National Laboratory in New Mexico, and also on reverse engineering extraterrestrial technology at a site called S-4 near the Area 51 Groom Lake operating location. Jeremy Corbell is a contemporary artist and documentary filmmaker. Watch the documentary "Bob Lazar: Area 51 & Flying Saucers" now streaming on Netflix.
I don't know what to make of this episode other than that it is fascinating. Tons of really interesting insights on aliens and the government. That said, go in with a critical mind as the line between fact and conspiracy seem a bit blurry.