involvement in iraq. we want to take you now live to baghdad, where you are looking at live pictures of the casing of the colors ceremony in the iraqi capital. it has been almost nine years since the u.s. invaded that country. and in that time, at least 128,000 iraqis have been killed in conflict situations. more than 4400 u.s. troops have also died. and now at this very moment,ed american military command in the country is closing a chapter in the history of both iraq and the u.s. armed forces with this somber ceremony. it is such a big contrast to the explosions that marked the beginning of the war in iraq, back in march of 2003. now, this moment does, in a very real sense, mark the end of a difficult period, not only for the u.s. military, but for the people of iraq. damon has covered the key moments of the iraq war and joins us from baghdad. you know, arwa, you ve seen it all. i was there with you for some of it. and looking on, you realize the tremendous suffering that