U.S. troops moved into Iraq more than eight years ago, with the goal of toppling Saddam Hussein. And CNN has been there from the beginning. Our own Michael Holmes has spent time in Iraq every year since 2003. He recently sat down with producer Jessica Ellis to go through some of his photographs from his time in Iraq, and to reflect on some of his best - and worst - memories of that time. And he also talked about how the U.S. invasion has changed, and will change, Iraq.