ebook,U.S. Government, U.S. Military, Department of Defense (DoD), U.S. Air Force (USAF), World Spaceflight News (WSN),The Rise and Fall of Dyna-Soar: A History of Air Force Hypersonic R&D, 1944-1963 - Pathfinding Effort to Develop a Transatmospheric Boost Glider and Spaceplane, Manned Military Space Program,Progressive Management,SCIENCE / Space Science,TECHNOLOGY & ENGINEERING / Aeronautics & Astronautics" />