It's just one statue -- but when it was toppled today, it may have been the most visible sign that Saddam's power is gone. U-S Marines used a tank to help a crowd of Iraqis bring down the statue in a square in central Baghdad. Even amid the cheering crowds -- there's still danger for U-S troops in Baghdad. A reporter traveling with a group of Marines says assailants suddenly opened fire today as the Marines drove along a street, where they were welcomed by crowds of Iraqis. He says Marines returned fire, killing several of the attackers.