Thank you. It's important to make that connection because people often don't see the connection that happens on a day-to-day basis. They just see people up in space, floating around and having a good time, but work is actually being done, and it's good to make that connection for the average person out there.
I'm going to go back to that nine-year-old in 1969 and I'm going to ask you a question and I'm not sure it relates to the government strategy. But you have experience in space, you've been up there, and there is talk of a manned mission to Mars. Do you have any thoughts to share on what some of the challenges could be that will face us as we prepare for that and when do you see that happening and how do you see that working out?