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”.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 discs 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.
For the propulsion of the studied vehicles, Bob Lazar claims that the atomic Element 115 served as the fuel. The mass of the nuclear fuel aboard each craft was said to be approximately two kilograms and was enough to last for several years before requiring replenishment.