George J. Marrett flew 188 combat missions on the Douglas A-1 Skyraider in Vietnam and tested more than forty types of military aircraft in twenty-five years as a test pilot for the Air Force and Hughes Aircraft Company. He lives in California.Joe Sutter led the team of engineers that created the Boeing 747. He served on the Presidential Commission to investigate the Challenger explosion with Neil Armstrong, Sally Ride, and Richard Feynman. Now in his eighties, he still serves as a consultant to Boeing. He lives in Seattle.