Ken Thomas and Joe McMann have produced a magnificent treatise on spacesuits, spacewalking, life support systems and escape systems. US Spacesuits is historical, massively comprehensive, precise, informative, relevant and readable. As an astronaut I spent 30 years in their world and in their suits. My life was in their hands. I trained on the Apollo and Skylab systems; I assisted in the development of the Skylab extravehicular activity (EVA) procedures and was a capsule communicator (capcom) on six of the Skylab walks. I helped them in the development and testing of the shuttle suits, escape systems and all the spacewalking equipment. Together with Don Peterson, I was the first astronaut to test the material in space and I was the lead walker in the initial repair of the Hubble Space Telescope. In this book I am able to relive a lot of my 30 years in that world and gain new insights and perspectives on those experiences.