Raddatz: Final sort of thoughts here of how long you've been here, what you've seen, whether you would have done anything differently, whether you would've adjusted things? What's your lesson learned so far?
Casey: It's hard to say. You don't really find out the big mistakes you've made for about two years or so after you've made them because if you knew, you wouldn't do them. It's still a little too fresh, but what I've seen is, is steady progress by the Iraqis and I've learned to have pretty good confidence in their ability to move this thing forward at their own pace and they're a smart group, they're a capable group and again they have this 35 years of living under Saddam Hussein that they know they don't want to go back to. So, they can do this, with our help.