Sgt First Class. Carl Porter a First Army trainer assists an Indiana Army National Guard Soldier of 76th Infantry Brigade Combat Team during zeroing of weapons at Camp Atterbury Joint Maneuver Training center as part of their mobilization training prior to a scheduled deployment to Iraq, Dec. 14, 2007. Sgt First Class. Carl Porter a First Army trainer assists an Indiana Army National Guard Soldier of 76th Infantry Brigade Combat Team during zeroing of weapons at Camp Atterbury Joint Maneuver Training center as part of their mobilization training prior to a scheduled deployment to Iraq, Dec. 14, 2007. SHARE: Download: Full Size (0.78 MB) Tags: Photo Essays Credit: VIRIN: 026319-G-CVW31-501.jpg Photo Gallery