Members of Joint Task Force-Civil Support maneuver through a processing line as part of exercise Vibrant Response 15 at Fort Eustis, Va., April 30, 2015. VR 15 is a major joint training exercise taking place at Camp Atterbury, Ind., and Jefferson City, Mo. (U.S. Air Force photo by Senior Airman Kimberly Nagle/Released)

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)

Karl Ludwig, Joint Task Force-Civil Support communications engineer, processes through a line, collecting the items he needs during exercise Vibrant Response 15 at Fort Eustis, Va., April 30, 2015. Items issued in the line prepared exercise participants for nuclear disaster response scenarios. (U.S. Air Force photo by Senior Airman Kimberly Nagle/Released)

U.S. Army Maj. Jason Engelbrecht, Joint Task Force-Civil Support future operations planner, picks up a radio in a gear collection line during exercise Vibrant Response 15 at Fort Eustis, Va., April 30, 2015. VR 15 is a domestic disaster response exercise that tests federal civilian and military response to domestic crises. (U.S. Air Force photo by Senior Airman Kimberly Nagle/Released)

U.S. Army Maj. Jason Engelbrecht, Joint Task Force-Civil Support future operations planner, receives his assigned radio frequency during exercise Vibrant Response 15 at Fort Eustis, Va., April 30, 2015. The exercise promotes the realistic integration of chemical, biological, radiological and nuclear response units in response to CBRN events. (U.S. Air Force photo by Senior Airman Kimberly Nagle/Released)

Cathy Thomas, Joint Task Force-Civil Support Joint Movement Center chief, assists a U.S. Air Force Airman through a processing line during exercise Vibrant Response 15 at Fort Eustis, Va., April 30, 2015. Although members of JTF-CS have never responded to a chemical, biological, radiological and nuclear incident, they continue to train in the event of such occurrence. (U.S. Air Force photo by Senior Airman Kimberly Nagle/Released)

U.S. Service members assigned to Joint Task Force-Civil Support make their way through a processing line during exercise Vibrant Response 15 at Fort Eustis, Va., April 30, 2015. The exercise will evaluate more than 140 members of JTF-CS headquarters and 610 members of the Defense Chemical, Biological, Radiological and Nuclear Response Force on consequence management operations after a CBRN event. (U.S. Air Force photo by Senior Airman Kimberly Nagle/Released)