A chemical, biological, radiological, and nuclear specialist assigned to the 37th Engineer Battalion, 2nd Brigade Combat Team, 82nd Airborne Division examines chemicals found in a notional chemical manufacturing warehouse during Operation Steel Box 2 at the Incident Response Training Department on Fort Leonard Wood, Mo., Feb. 24, 2015. The operation enhanced the brigade’s chemical and biological weapons entry team’s proficiency in mission planning, preparation and execution. (82nd Airborne Division photo by Sgt. Eliverto V. Larios/Released)