APOLLO 7 astronaut Colonel Walter Cunningham discusses the challenges of landing a man to the moon, including the APOLO 1 fire that took the lives of astronaut Gus Grissom, Ed White & Roger Chaffee. The first manned flight after the tragedy, APOLO 7, the first flight to go to the Moon & back, APOLO 8, & the first Moon landing, APOLO 11.