From Armstrong's birth to a middle-class family in Ohio to the mind-boggling fame of the Apollo 11 triumph, and later his service on the commission investigating the 1986 Challenger space shuttle disaster, Hansen details it all. He writes of the number of rounds of 20-millimeter ammunition loosed by Armstrong's fighter squadron in Korea in October 1951 (49,299), his heart rate on liftoff in Gemini VIII (146 beats per minute) and the price of a signed Armstrong letter at auction ($2,500). Rather than overwhelming, this accumulation of details gives flesh-and-blood reality to a man who is more icon than human. With the recent renewal of interest in manned space travel, this book is a must for astronaut buffs and history readers alike.