Spc. Ryan Halbrook uses a compass to locate coordinates. U.S. Army Spc. Ryan Halbrook uses a compass to locate coordinates for an M109-A6 Paladin Self-Propelled Howitzer during a top gun competition on Camp Taji, Iraq, on Oct. 10, 2007. Halbrook is attached to Alpha Company, 1st Battalion, 82nd Brigade Combat Team, 1st Cavalry Division. SHARE: Download: Full Size (0.02 MB) Credit: VIRIN: 512396-T-TUG85-609.jpg Photo Gallery