Bob Lazar, UFO Hoaxster...In 'Bob Lazar: Area 51' documentary, director investigates UFO whistle-blower's story...Bob Lazar Says the FBI Raided Him to Seize Area 51's Alien Fuel. The Truth Is Weirder

"On November 11 and 13, 1989, viewers of KLAS-TV in Las Vegas, Nevada, heard an incredible story from news reporter George Knapp: A scientist named Bob Lazar had come forth to reveal that the U.S. government possesses the remains of extraterrestrial vehicles. From these vehicles have come extraordinary technological breakthroughs.

A government physicist, Bob Lazar said he had worked in the S-4 section the formerly secret military base known as Area 51, a corner of the Nevada Test Site. There, he had read documents indicating the existence of ongoing research on an "anti-gravity reactor" for use in propulsion systems."

"He was astonished, he said, but he was even more shocked to be shown nine flying discs "of extraterrestrial origin" stored in a hangar. As part of the gravity-harnessing propulsion, the craft used an element, 115, unknown on Earth, because it is "impossible to synthesize an element that heavy here on Earth. ... The substance has to come from a place where super-heavy elements could have been produced naturally." From the recovered craft the U.S. government had collected some 500 pounds of the stuff."
https://science.howstuffworks.com/space/aliens-ufos/bob-lazar.htm

"Most people have heard about Area 51, the top-secret military research base in the Nevada desert that’s been at the heart of extraterrestrial lore for decades. But outside the community of UFO enthusiasts, fewer people know about Bob Lazar, the researcher and government whistle-blower who literally put Area 51 on the map.

Lazar came forward to the media in 1989 with a story about how he’d worked as a military researcher to reverse-engineer technology from recovered alien spacecraft. His explosive account generated headlines around the world and permanently affixed Area 51 in the imaginations of sci-fi fans who were entranced by his story, and in the real-world passions of a generation of flying-saucer investigators who wanted to either verify or debunk his claims"
https://www.freep.com/story/entertainment/movies/2019/04/10/bob-lazar-area-51-documentary-ufo-freep-film-festival/3419204002/

"On May 24, 1989, in a live interview with investigative reporter George Knapp on KLAS-Las Vegas, Robert “Bob” Lazar took the first steps toward becoming one of the most influential (and controversial) figures in all of UFO lore.

Concealing his identity and using the pseudonym “Dennis,” Lazar said that deep within an unconfirmed section of Area 51 called “S4,” he’d once worked on recovered extraterrestrial spacecraft for the US government."

"Months later, no longer concealing his identity, Lazar claimed the US government was now waging an all out covert war against him. He said it shot out one of his tires and erased all of his educational records from CalTech and MIT. Lazar eventually claimed that, while at Area 51, his job was to reverse-engineer an alien material called “element 115” that he claimed was used to power an alien spacecraft. Lazar has repeatedly hinted that he took a piece of element 115 from Area 51, and that this element is of great interest to the federal government."
https://www.vice.com/en/article/evjwkw/bob-lazar-says-the-fbi-raided-him-to-seize-area-51s-alien-fuel-the-truth-is-weirder