Let me make my point about Vietnam. When the Nixon initiation came into office, there were 550,000 Americans in combat. And ending the war was not a question of turning off a television channel. And so, debating on how we got there and what judgments were made was not going to help us.
I never made a career decision based solely on my desire to be an astronaut. I attended the Naval Academy because I wanted to be a Navy pilot. I majored in math because math had always come pretty easily to me and I liked it.