SAB AL BOUR DUTY U.S. Army Sgt. Matthew Baumer pulls security in Sab al Bour, southwest of Taji, and north of Baghdad, July 20, 2009. Baumer is a Stryker vehicle gunner assigned to the 56th Stryker Brigade Combat Team's Troop A, 2nd Squadron, 104th Cavalry Division. SHARE: Download: Full Size (0.07 MB) Credit: VIRIN: 924452-V-ADD12-052.jpg Photo Gallery