Staff Sgt. Charlotte Robinson (left), Staff Sgt. Jontae Wallace, and Capt. Marc Sylvander read an air sample while being observed by Senior Airman Grant Nelson during a training scenario at the Center for National Response in Gallagher, W.Va., March 24, 2010. The Air Force District of Washington sent members of their chemical, biological, radiological, nuclear, and high yield explosives response force to the training facility in two groups, each for a week long training event to give them the skills necessary to handle real world emergency situations. (U.S. Air Force photo by Staff Sgt. Renae L. Saylock)