It's no secret that I've been reluctant to use my name for things.

I do a lot of running and hiking, and I also collect stamps - space stamps and Olympics stamps.

My background is in physics, so I was the mission specialist, who is sort of like the flight engineer on an airplane.

The most anxious time was during launch, just because that is so dramatic.

It's easy to sleep floating around - it's very comfortable. But you have to be careful that you don't float into somebody or something!

I have a lot of common sense. I know what needs to be done and how to approach it. I have an ability to work with people on large enterprises.

Even though NASA tries to simulate launch, and we practice in simulators, it's not the same - it's not even close to the same.