SPY Historian Vince Houghton sat down with USAF Colonel (Ret.) Buz Carpenter, who flew some of the most incredible aircraft ever developed. As an RF-4C pilot in Vietnam, Col. Carpenter flew low level reconnaissance missions over enemy territory. Later, as the pilot of the SR-71, Buz took aviation to speeds and heights that have yet to be equaled (except by other SR-71s). Finally, at the end of his Air Force career, Col. Carpenter worked with the USAF’s Blackworld program, helping to develop today’s most advanced aircraft.