Chuck Yeager grew up in West Virginia and served as a pilot in World War II, shooting down 13.5 enemy planes. In 1947, he broke the sound barrier while piloting the experimental X-1 aircraft. Yeager continued to push the boundaries of aviation, raising the airspeed record and helping to develop experimental planes like the X-15. He established himself as the exemplar of the "right stuff" and helped pave the way for the space program through daring test flights.