Who is Bob Lazar and are his Area 51 claims credible?

“Bob Lazar publicly claimed in 1989 to have worked on reverse-engineering recovered alien craft at "S-4" near Area 51. AARO's 2024 Historical Record Report found no empirical evidence for the program he described.”

Bob Lazar is an American who claimed in a 1989 Las Vegas television interview with George Knapp to have worked as a physicist at "Sector 4" (S-4), a classified facility approximately 15 miles south of Area 51 near Papoose Lake, Nevada, reverse-engineering recovered extraterrestrial spacecraft. Lazar described nine craft of varying shapes and a fuel he called "Element 115." His employment, education credentials, and the existence of S-4 itself have never been corroborated by any U.S. government record. AARO's 2024 Historical Record Report explicitly addressed the broader narrative of classified retrieval programs — including those in Lazar's specific claims — and stated that AARO "found no empirical evidence" for any such program. Lazar's claims remain widely discussed in popular UFO culture but are not part of any U.S. government public record, including PURSUE Release 01.