Today's picture shows the Saturn V rocket being rolled out to the launch pad for the Apollo 8 Mission. The Apollo 8 mission is one which undoubtedly established the US as the leader in the space race. Up until then, we were simply doing things that Russia had done slightly earlier. Apollo 8 had a number of "firsts". It was the first time a manned spacecraft escaped earth's orbit, made it to the moon, orbited the moon, and returned safely. It also got the manned program back on track after the catastrophe of Apollo 1.