An Iraqi soldier waves a grenade launcher in front of a destroyed U.S. tank in the southern outskirts of Baghdad, April 6, 2003. A heavy artillery barrage thundered on Sunday from Daura, a southeastern suburb of Baghdad which contains an oil refinery, a Reuters witness said. Planes roared over the Iraqi capital as the sound of artillery fire echoed from Daura, which includes an electricity power grid as well as the oil refinery, Reuters correspondent Samia Nakhoul said in central Baghdad.