of issues ranging from the development of new state-of-the-art aircraft systems to the safety of spaceflight operations. Perhaps, most remarkable of all, for more than two decades, he has retained the stamina, skill and mental acuity to fly and evaluate the most modern high-performance aircraft. He did much of his flying at Edwards where he remains an active consulting test pilot, serving—in the words of one AFFTC commander—as a “wise, accurate and keenly observant advisor” to the Air Force Flight Test Center.