North American XB-70A Valkyrie - Warbird Tech Vol. 34
Dennis R. Jenkins spent 30 years as an engineer and manager on the Space Shuttle Program and other space-related programs incuding the X-33, Orbital Space Plane, and the Crew Exploration Vehicle.  Most recently he has served as an advisor and investigator on the Columbia Accident Investigation Board, and as technical staff to the president's Commission on Implementation of United States Space Exploration Policy and the Space Shuttle Return to Flight Task Group.  He is currently the Verville Fellow at the Smithsonian Institution's National Air and Space Museum.  Jenkins has written more than 40 books on aerospace subjects.