Army Spc. Robert Davis, left, prepares to fire an 81mm mortar system on Camp Atterbury, Ind., July 12, 2013. Davis is assigned to the Indiana National Guard's Headquarters Company, 1st Battalion, 293rd Infantry Regiment. Army Spc. Robert Davis, left, prepares to fire an 81mm mortar system on Camp Atterbury, Ind., July 12, 2013. Davis is assigned to the Indiana National Guard's Headquarters Company, 1st Battalion, 293rd Infantry Regiment. SHARE: Download: Full Size (2.67 MB) Tags: Photo Essays Credit: VIRIN: 542669-B-EEN66-018.jpg Photo Gallery