On the dangers of flying...
"The space shuttle is still an experimental vehicle. Even though it flew over 30 years, it only flew 135 times. As a test pilot I get that. I know there’s incredible risk involved...At the end of the day, NASA said it was a one in 57 risk of dying and losing the vehicle in every space shuttle flight. The numbers kind of show that. It’s almost as dangerous as storming the beach at Normandy on D-Day."
Despite the odds, Mark made it clear that the benefits reaped from his missions were well worth the lingering potential for disaster, in his mind.
"You evaluate the risk and the reward. For me, it’s not really the reward for me personally, but what does it do for our country, for our space program, for society. I think the reward is pretty incredible."