He says he worked a handful of days at a hidden site called S-4. Between December 1988 and April 1989. Robert "Bob" Lazar placed the site beside Papoose dry lake, south of Groom Lake, and described his job as reverse-engineering flying saucers not made on Earth. He spoke of nine hangars built into a mountainside, nine discs, and a slim craft he called the Sport Model, with really small chairs inside. On 22 March 1989 he drove out with his wife Tracy, Gene Huff and John Lear. Huff remembered a bright light rising above the mountains, dancing, then hovering.
Stories1

Bob Lazar and the S-4 Claims
36Partially documented
Claimed S-4 physicist and the only insider witness