EM teaches CBRN defense Published March 17, 2016 By Senior Airman Amanda Morris 2nd Bomb Wing Public Affairs Unexploded ordnance training aids sit on display during chemical, biological, radiological and nuclear defense survival skills training at Barksdale Air Force Base, La., March 8, 2016. The visual aids are used to teach Airmen how respond during a CBRN attack. (U.S. Air Force photo/Senior Airman Amanda Morris)