From the first American orbiting satellite, to Neil Armstrong and Buzz Aldrin's historic walk on the moon, virtually every major achievement in American space history was made possible by a Rocketdyne engine. This book is the story behind that unprecedented accomplishment. It chronicles the author's own memories and experiences as a member of the Rocketdyne team, as well as those of other key members of this elite group of rocket pioneers who propelled the American space program from trailing the Soviet Union in the 1950s and early 1960s into a position of leadership in space. It is a story of heroes and even a few villains, but mostly it is a story of triumphant success in the human venture into space.