Living and working in space is man's greatest challenge. The men and women serving on the Manned Orbiting Laboratories and the new Manned Orbital Weapons Station know the are the leading edge of most important project humanity has ever attempted. The conquest of space will guarantee man's survival. Yet, there may not be enough time left. On Earth, one empire is collapsing under its own weight and there are those in its government who would prefer to suffer utter destruction rather than defeat. Will a conspiracy to stop them succeed? Another is trying to repair the damage from previous blunders and rebuild its relations with the rest of the world. Can they succeed before their enemies use a horrifying new weapon against them? As these crises converge to threaten destruction, a baffling mystery is solved. But, the question remains, will humanity have time to scale The High Frontier?

From the early days of hot air ballooning to supersonic aircraft, High Frontier chronicles the history of flight in Pennsylvania. Early experimentation with lighter-than-air craft in the nineteenth century was followed by significant advances in aerodynamics, the advent of the airplane, and its gradual acceptance by the public. The state had its own contingent of inventors and aviators, who flew and crashed their homemade machines in countless exhibitions. After World War I commercial flights took wing, including government airmail delivery, and expanded airports, federal and state regulation of aeronautics laid the groundwork for the growth of the industry.

Access—no single word better describes the primary concern of the exploration and development of space. Every participant in space activities—civil, military, scientific, or commercial—needs affordable, reliable, frequent, and flexible access to space. To Reach the High Frontier details the histories of the various space access vehicles developed in the United States since the birth of the space age in 1957. Each case study has been written by a specialist knowledgeable about the vehicle described and places each system in the larger context of the history of spaceflight. The technical challenge of reaching space with chemical rockets, the high costs associated with space launch, the long lead times necessary for scheduling flights, and the poor reliability of the rockets themselves show launch vehicles to be the space program's most difficult challenge.

As the National Aeronautics and Space Administration (NASA) retires the Space Shuttle and shifts involvement in International Space Station (ISS) operations, changes in the role and requirements of NASA's Astronaut Corps will take place. At the request of NASA, the National Research Council (NRC) addressed three main questions about these changes: what should be the role and size of Johnson Space Center's (JSC) Flight Crew Operations Directorate (FCOD); what will be the requirements of astronaut training facilities; and is the Astronaut Corps' fleet of training aircraft a cost-effective means of preparing astronauts for NASA's spaceflight program? This report presents an assessment of several issues driven by these questions. This report does not address explicitly the future of human spaceflight.