A U.S. Army Humvee escorts a long line of tractor-trailers. A U.S. Army Humvee escorts a long line of tractor-trailers as they cross the desert in Iraq on Aug. 10, 2005. The truck convoys bring thousands of tons of supplies to U.S. and coalition forces in Iraq. SHARE IMAGE: Download Image: Full Size (0.04 MB) Photo By: VIRIN: 931821-X-FLB19-790.jpg Photo Gallery