BOB.

He described a job at a secret site he called S-4, near Papoose Lake on the Nevada Test and Training Range, where he claimed to have helped reverse-engineer one of nine recovered extraterrestrial craft. On November 11, 1989, "Dennis" went on camera under his real name: Robert Scott Lazar.

Lazar described a sport-model disc powered by a reactor that used a stable isotope of element 115 to generate a gravity field he called the "strong nuclear force." He claimed to have read briefing documents stating the craft were of extraterrestrial origin, with associated biological evidence. Element 115 (later named moscovium) was synthesized for the first time in 2003, but only in vanishingly small quantities and as an unstable isotope; Lazar's claim of a stable isotope remains unconfirmed.

Lazar's credentials have been a primary point of contention. He claimed graduate degrees from MIT and Caltech, but neither institution has records of his attendance. Personnel records at Los Alamos National Laboratory list him in a 1982 phone book as a contractor, partially supporting his Los Alamos employment claim, but his alleged Naval Intelligence employment file at EG&G has not been verifiably produced. Lazar has stated that all such records were systematically erased.

Despite the credential controversy, Lazar's testimony shaped Area 51 in popular consciousness. He is the source of the public name "S-4," of the description of "sport model" disc geometry, and of the element-115 propulsion concept. Jeremy Corbell's 2018 documentary Bob Lazar: Area 51 & Flying Saucers and a Joe Rogan Experience interview reignited public interest. The case is best treated as influential testimony with serious unresolved documentation problems.