This book, to be used in the Air Force ROTC program only, discusses various aspects of the aerospace industry and its importance to the society. Not only does a modern and strong aerospace technology help in national defense, but it is a major economic industry as well. The vast number of people employed could shake the roots of economic prosperity in a nation, should those people be out of work. Besides providing jobs to people, the growth of this industry ensures future human "leaps" in space and advancements in many other areas. The impact on society of research in this area is profound and will be felt more in the future. This industry also provides a field which can boost cooperation among nations of the world. (PS)