MORTAR MUSCLE U.S. Army Spc. Laurence Walker, left, and Army Sgt. Jacob Ford, center, observe as an Iraqi soldier takes a hands-on test on a120mm mortar system in Mahmudiyah, Iraq, March 26, 2009. The U.S. soldiers are assigned to the 1st Infantry Division's Company D, 1st Combined Armor Battalion, 63rd Armor Regiment, 2nd Brigade Combat Team. SHARE: Download: Full Size (0.08 MB) Credit: VIRIN: 402278-N-DYO00-207.jpg Photo Gallery