And, all these things need to be coordinated; so we all need to work together, have timers going and everything so we're all coordinated and get this piece of orchestration done.

There's been a tremendous amount of work that's been done that you can't see in Columbia.

You know, piloting really isn't my hobby. And, it's probably not something I'd do in my spare time if I could do whatever I wanted to do. But, I'll tell you: if you've got to make a living, it's a great way to make a living!

I consider myself to be very fortunate in my career, my timing has worked out.

Now you're coming back to Earth, and things are getting more and more dynamic.

And, that's what I truly believe that we're doing when we're advancing scientific knowledge is we're someday making the world better. Not only for our children, but for all people after that.

Well, for me it really wasn't a case of deciding to be an astronaut.