Expert Instruction Austrian and American first responders and service members take expert instruction from U.S. Department of Energy's National Nuclear Security Administration and the Austrian CBRN Defence Centre, Dec. 11, 2018. SHARE IMAGE: Download Image: Small (0 KB)| Medium (0 KB)| Full Size (1.39 MB) Photo By: Army 1st Lt. Joshua Snell VIRIN: 181211-A-JH192-258C.JPG Photo Gallery