Cathy Thomas, Joint Task Force-Civil Support Joint Movement Center chief, places a radiation watch on her wrist during exercise Vibrant Response 15 at Fort Eustis, Va., April 30, 2015. The watch would detect possible chemical, biological, radiological and nuclear items. The exercise is set to provide training to prepare for possible CBRN attacks. (U.S. Air Force photo by Senior Airman Kimberly Nagle/Released)