You know how sometimes you hear a chord played on an organ and you can feel it vibrating in your bones? Sometimes when I'm writing, I can feel my bones vibrating because I'll have a thought or I'll have a character's voice in my head, and that's when I know I'm on the right track.
I think how veterans are treated in our country is an abomination. We don't have the draft any more, which is why so many soldiers come from working-class - rather than middle- or high-income families. Those wealthier families aren't affected, so they're not agitating for change.