Lazar claimed to have worked in 1988 and 1989 as a physicist at S4 allegedly located at Papoose Lake southwest of top secret Area 51 near Groom Dry Lake, NV. According to Lazar, S4 serves as a hidden military location for the study and research of extraterrestrial spacecraft, or flying saucers using reverse engineering. Lazar says he saw 9 different extraterrestrial vehicles there and has provided detailed information on the mode of propulsion and other technical details of a disk shaped vehicle he called the sport model.
Lazar's credibility was challenged after it was discovered that schools he was supposed to have attended had no record of him, while others in the scientific community had no memory of ever meeting him. Lazar's supporters counter that Lazar's credentials and history were sabotaged to create the very questions of credibility his critics have emphasized.
Lazar first appeared in the media in an Omni magazine article in the early 1980s. He also appeared on television on a local Las Vegas news program discussing his experience at S4 and Area 51. He was also featured in the Los Alamos Monitor in a story dealing with a jet car he claimed to have built with help from a NASA researcher. The car was built from a jet engine modified and placed on an existing car model The article stated that Lazar was a physicist at the Los Alamos Meson Physics Facility.
In November 1989, Lazar appeared in a special interview with investigative reporter George Knapp on Las Vegas TV station KLAS to discuss his purported employment at S4, a facility he claims exists near Area 51. In his interview with Knapp, Lazar said he encountered several flying saucers. He says he first thought the saucers were secret terrestrial aircraft whose test flights must have been responsible for many UFO reports. On closer examination and from having been shown multiple briefing documents, Lazar came to the conclusion that the disks were of extraterrestrial origin. In his filmed testimony Lazar explains how this impression first hit him after he boarded one craft being studied and examined its interior. Lazar claims to have worked at Los Alamos National Laboratory, specifically in the Meson Physics facility, involved with experiments using the half a mile long Linear Particle Accelerator. Knapp claimed to find Lazar's name among that of other scientists in the 1982 Los Alamos phone book and have a 1982 Los Alamos Monitor news article mentioning Lazar, as a physicist at the Los Alamos Meson Physics Facility.
For the propulsion of the studied vehicles, Bob Lazar claims that the atomic Element 115 served as a nuclear fuel. Element 115, temporarily named Ununpentium, chemical symbol Uup, reportedly provided an energy source which would produce anti gravity effects under proton bombardment, along with antimatter for energy production. As the intense strong nuclear force field of Element 115's nucleus would be properly amplified, the resulting large scale gravitational effect would be a distortion or warp of space time that would, in effect, greatly shorten the distance and travel time to a destination.
Lazar also claims that he was given introductory briefings describing the historical involvement by extraterrestrial beings with this planet for the past 100,000 years. The beings allegedly originate from the Zeta Reticuli 1 & 2 star system and are therefore referred to as Zeta Reticulans, popularly called greys. According to Lazar these beings were referred to as the kids within the program, or as gourds among the personnel.
Lazar's stories have garnered considerable media attention and controversy. Lazar's story has its supporters and skeptics, including Stanton Friedman, a ufologist who claimed to have looked into Lazar's background.
Another Lazar debunker is Dr. David L. Morgan. Morgan looked into all of Lazar's scientific claims and claims to have scientifically refuted most of the ideas that Lazar had elaborated on in his description of the alien spacecraft, particularly its propulsion systems and use of Ununpentium, or Element 115. Morgan stated that: After reading an account by Bob Lazar of the physics of his Area 51 UFO propulsion system, my conclusion is this: Mr. Lazar presents a scenario which, if it is correct, violates a whole handful of currently accepted physical theories. That in and of itself does not necessarily mean that his scenario is impossible. Morgan went on to argue that the presentation of the scenario by Lazar is troubling from a scientific standpoint. Mr. Lazar on many occasions demonstrates an obvious lack of understanding of current physical theories.
Lazar alleges that the S4 facility is located near the Papoose Range within Nevada's Nellis Air Force Test Range, and is accessed via a dirt road. The details that Lazar provided regarding S4 are very nonspecific, with Lazar having stated that he was transported in a blacked out bus to the site which did not allow him to see the landscape.
Lazar claims that the S4 base proper contains nine aircraft hangars built into the side of the mountain range, with hangar doors constructed on an angle matching the slope of a mountain. The doors to the hangars are camouflaged with natural material to blend in with the side of the mountain and the adjoining desert floor. He claims the site is protected from all view, being located within a valley. Inside these hangars are, according to Lazar, the laboratories and scientists studying extraterrestrial spacecraft.
The name S4 Area 51 appears in the controversial Majestic 12, MJ-12 documents but are marked, by the FBI's investigators, as bogus. No reliable outside verification of Lazar's claims are known to exist, and access to the area by the public is highly restricted by the United States government.
Ufologist Stanton Friedman has also investigated several of Lazar's claims regarding S4 and his claimed work at the site and found them all to be unfounded.
A 1991 Los Angeles Times article reported that Robert Scott 'Bob' Lazar was on probation in Clark County, NV on a pandering charge for having installed a computer system for an illegal brothel.