I think human society for tens of thousands of years has sent young men out in small groups to do things that are necessary but very dangerous. And they've always gotten killed doing it. And they've always turned it into a matter of honor and a way of gaining acceptance back into society if they survived.

There's no reason to do anything twice, and certainly no reason to do something that almost killed you.

The negative effects of combat were nightmares, and I'd get jumpy around certain noises and stuff, but you'd have that after a car accident or a bad divorce. Life's filled with trauma. You don't need to go to war to find it it's going to find you. We all deal with it, and the effects go away after awhile. At least they did for me.

No one will remember that President Obama supported the Arab Spring if it eventually fails and the region collapses back into the political Dark Ages. If we actively engage these movements with advice, with money, and, when necessary, with military force, then we get a vote in how it all turns out.

I think, unfortunately, we live in a world where people attack other people and I think a legitimate rationale for war is the saving of human life, the saving of lives of people who cannot defend themselves.

At 19, your brain hasn't finished wiring itself. So the first time you have a good friend die, most people don't go through that at 19. Soldiers do. They're facing life in this accelerated, compressed form, and a lot of times, they're not ready for it.

Firemen don't talk about whether a burning warehouse is worth saving.