When I lived in Orlando, shortly after the dinosaurs disappeared, I ran with the Orlando Front Runners. A great group. There were identical twin brothers who ran with the group. I don't remember what one of them did, but the other one made it easy to remember, his favorite T-shirt read, "As a Matter of Fact I Am a Rocket Scientist." He was an engineer responsible for the shuttle main engines, the ones shown above. I wonder what he is doing today? I wonder if he is still running?