U.S. Army Staff Sgt. Mark Williams instructs Iraqi army soldiers. U.S. Army Staff Sgt. Mark Williams instructs Iraqi army soldiers from the 8th Iraqi Army Division during a preventative maintenance checks and services class on Feb. 21, 2007, near Ad Diwaniyah, Iraq. SHARE: Download: Full Size (0.03 MB) Credit: VIRIN: 232896-J-EAB30-129.jpg Photo Gallery