TEAR GAS TRAINING Army Spc. Kristi Buickel, right, breaks the seal of her gas mask, exposing herself to CS tear gas during a simulated chemical weapons attack in the gas chamber on Camp Atterbury, Ind., June 22, 2012. Buickel, a medic, is assigned to the 215th Area Support Medical Company, Indiana National Guard. SHARE: Download: Full Size (0.07 MB) Credit: VIRIN: 289827-Z-FRB01-097.jpg Photo Gallery