army's fort hood, we meet van gilbreath, one of the people who helps run this post. over a game of pool, we start learning more about what changed his life forever. when did you serve in iraq? >> in '04 to '04. >> reporter: specialist gilbreath was in kuwait as the war began. he was about a abrams tank system mechanic and was part of the invasion of saddam hussein's iraq. he joined the army in 1999 and still serves in the national guard. >> seemed like it was all going to smooth out and iraq could continue on a nice path. >> reporter: it was of course anything but a nice path. more than 500 soldiers from fort hood, texas, were killed serving in iraq. ♪ more than any other u.s. military installation. about one out of every nine americans who died in iraq were deployed from this base. here at fort hood, feelings about what happened in iraq in the past vary. so do feelings about what should be done in the future. but in this community, the sacrificed so much, there is a

>> reporter: specialist gilbreath says he would also like all u.s.- >> the iraqi can't control the situation, u.s. troops play have to go back in, i guess. i would hate to see that. >> reporter: at fort hood there is a strong and enduring sense of mission, even when there is disagreement about what the mission should be. gary tuchman, cnn, fort hood, texas. ♪ >> up next tonight, emotional testimony on capitol hill. a member of sergeant bowe bergdahl's platoon says he committed the ultimate betrayal and should face charges. to help reduce the risk of another one. if you've had a heart attack be sure to talk to your doctor before you begin an aspirin regimen. and other car insurance companies? yes. but you're progressive and they're them. -yes. -but they're here. -yes. -are you... -there? -yes. -no. -are you them? i'm me. but the lowest rate is from them. -yes. -so them's best rate is... here. so where are them? -aren't them here? -i already asked you that. -when? -feels like a while ago. want to take it from the top? rates for us and them. now that's