You know when I was six years old, that's when we were first putting men on the moon, and every kid my age wanted to be an astronaut. Colonel Tim Kopra, U.S. Army, and I'm an Astronaut.

I lived under water for a week. I've spent ten weeks learning [sic] Russian language. Water survival in a Soluse capsule. I've done winter survival with [sic] Russians, spent time in Japan and Canada.

There are very few boring days in my job, but I think all of us recognize that there is a huge element of risk in what we do. The safest space program is one where you don't fly, but all of us within the space business recognize that, one, it's worth it, and two, everybody's working as absolutely as hard as they can to mitigate risk.

Within the next ten years, we will very hopefully be back on the moon learning all the things that we need to go onto Mars.