The Challenger disaster was a devastating blow and prompted President Ronald Reagan to convene fourteen extraordinary specialists to investigate the cause of the accident. The result was the Rogers Commission, named for its chairman William P. Rogers, and included Neil Armstrong, Sally Ride, physics Nobel laurate Richard Feynman, and mechanical engineer, Roger M. Boisjoly of Moron Thiokol, who had warned NASA of the uncertainty of the O-ring and its possible failure, which unfortunately came to fruition.