PIERO POISED U.S. Army Sgt. William Cotner and his military working dog, a German Shepherd, "Staff Sgt. Piero" search for unexploded ordnance and cached munitions in the Taji Qada, Iraq, March 14, 2009. Cotner and Piero are assigned to the 28th Infantry Division's Troop C, 2nd Squadron, 104th Cavalry, 56th Stryker Brigade Combat Team. SHARE IMAGE: Download Image: Full Size (0.06 MB) Photo By: VIRIN: 253056-B-RLB21-108.jpg Photo Gallery