10/15/2012 - Firefighters wait outside of a cordoned area during a major accident response exercise on Barksdale Air Force Base, La., Oct. 12. In this scenario, Airmen were exposed to a simulated hazardous substance in the Warrior Center's dining facility. Firefighters, security forces, emergency management, bioenvironmental and medical Airmen and civilians worked together to ensure the building was safe and secure. (U.S. Air Force photo/Senior Airman Micaiah Anthony)(RELEASED)

10/15/2012 - Emergency response personnel respond to a major accident response exercise on Barksdale Air Force Base, La., Oct. 12. In this scenario, Airmen were exposed to a simulated hazardous substance in the Warrior Center's dining facility. Firefighters, security forces, emergency management, bioenvironmental and medical Airmen and civilians worked together to ensure the building was safe and secure. (U.S. Air Force photo/Senior Airman Micaiah Anthony)(RELEASED)

10/15/2012 - Airmen from the 2nd Security Forces Squadron secure the perimeter with a military working dog during a major accident response exercise on Barksdale Air Force Base, La., Oct. 12. The MARE evaluated the response of emergency personnel to Airmen exposed to a simulated hazardous substance. Firefighters, security forces, emergency management, bioenvironmental and medical Airmen and civilians worked together to assist the Airmen and reduce the spread of the hazardous substance. (U.S. Air Force photo/ Senior Airman Micaiah Anthony)(RELEASED)

10/15/2012 - Airmen exposed to a simulated hazardous substance explain how they were contaminated to firefighters from the 2nd Civil Engineer Squadron during a major accident response exercise on Barksdale Air Force Base, La., Oct. 12. Before the Airmen could proceed through the decontamination area, firefighters had to hose them down with water and quarantine them until paramedics arrived. While in quarantine, Airmen told the rescuers they were exposed to a white powdery substance in the Warrior Center's dining facility. (U.S. Air Force photo/ Senior Airman Micaiah Anthony)(RELEASED)

10/15/2012 - Airmen exposed to a simulated hazardous substance wait in a quarantined area as emergency response personnel assess the situation during a major accident response exercise on Barksdale Air Force Base, La., Oct. 12. Firefighters, security forces, emergency management, bioenvironmental and medical Airmen and civilians worked together to assist the Airmen and reduce the spread of the hazardous substance. (U.S. Air Force photo/ Senior Airman Micaiah Anthony)(RELEASED)

10/15/2012 - Airman 1st Class Brian Foley, 2nd Civil Engineer Squadron emergency management, gets his temperature taken by an Airman from the 2nd Medical Group during a major accident response exercise on Barksdale Air Force Base, La., Oct. 12. Foley had his temperature and vital signs taken before he donned a hazardous material suit to ensure there were no drastic changes when he returned from the contaminated area. (U.S. Air Force photo/ Senior Airman Micaiah Anthony)(RELEASED)

10/15/2012 - Emergency response Airmen listen to a safety briefing during a major accident response exercise on Barksdale Air Force Base, La., Oct. 12. During the briefing the Airmen discussed the plan of action, evacuation procedures and hand signals. (U.S. Air Force photo/ Senior Airman Micaiah Anthony)(RELEASED)

10/15/2012 - Staff Sgt. Shawn Gallagher, left, 2nd Aerospace Medicine Squadron bioenvironmental engineer technician, and Airman 1st Class Brian Foley, 2nd Civil Engineer Squadron emergency management, approach the Warrior Center during a major accident response exercise on Barksdale Air Force Base, La., Oct. 12. The Airmen donned hazardous material suits to test the building for contaminates. Firefighters, security forces, emergency management, bioenvironmental and medical Airmen and civilians worked together to reduce the spread of the hazardous substance. (U.S. Air Force photo/ Senior Airman Micaiah Anthony)(RELEASED)

10/15/2012 - Airman 1st Class Brian Foley, 2nd Civil Engineer Squadron emergency management, walks into the Warrior Center's kitchen after examining a powdery substance during a major accident response exercise on Barksdale Air Force Base, La., Oct. 12. The MARE evaluated the response of emergency personnel to Airmen exposed to a simulated hazardous substance. Firefighters, security forces, emergency management, bioenvironmental and medical Airmen and civilians worked together to reduce the spread of the hazardous substance. (U.S. Air Force photo/ Senior Airman Micaiah Anthony)(RELEASED)

10/15/2012 - Airman 1st Class Brian Foley, left, 2nd Civil Engineer Squadron emergency management, and Staff Sgt. Shawn Gallagher, 2nd Aerospace Medicine Squadron bioenvironmental engineer technician, walk away from a simulated contaminated building during a major accident response exercise on Barksdale Air Force Base, La., Oct. 12. The Airmen donned hazardous material suits to search and test the building for simulated contaminates. After the search, the two Airmen had their vital signs taken again to see if they had any heat-stress related injuries. (U.S. Air Force photo/ Senior Airman Micaiah Anthony)(RELEASED)

10/15/2012 - Agents from the Air Force Office of Special Investigation Detachment 219 brief Airmen from the 2nd Security Forces Squadron after a simulated vehicle attack during a major accident response exercise on Barksdale Air Force Base, La., Oct. 12. After the briefing, the Airmen and agents searched the area for evidence and suspicious material. (U.S. Air Force photo/ Senior Airman Micaiah Anthony)(RELEASED)