Guest: Alan Lawrie. Topics: Saturn 1/1B rocket, A-1B manned flights, Saturn 5, rocket engineering, design challenges, Von Braun, lost knowledge. Alan Lawrie was our guest to talk about his new Apogee book, "Saturn 1/1B." We discussed the Saturn rocket program in-depth from the engineering qualifications and risk-taking to the management and leadership needed to make the program successful.