Alan Lawrie is a satellite propulsion engineer working for Airbus Defence & Space in the United Kingdom. He has 35 years of experience in the space propulsion industry. He has written two books on the Saturn rockets as well as articles in Spaceflight magazine and conference papers on related subjects. He frequently gives public lectures on these subjects. He is a Fellow of the British Interplanetary Society and lives in the United Kingdom. All author proceeds from the sales of this book will go to the Discovery Museum, Science & Space Center of Sacramento.