What an exciting time when SpaceX launched the Dragon a few days ago. I heard a comment about how this is the first launch of the fifth class of US manned space vehicle, and I had to think about it for a few seconds. Mercury, Gemini, Apollo, the Shuttle, and now Dragon. And then I thought about “first” of each. I’m not sure of this … I was pretty young, but I think it’s just possible that I saw (via TV) each of those firsts!

Sort of leaves me wondering where I’ll be for the sixth!