U.S. Air Force Senior Airman Dena Kirkman, 100th Civil Engineer Squadron Emergency Management specialist from Camdenton, Mo., teaches a chemical, biological, radiological and nuclear training class to Team Mildenhall Airmen Aug. 14, 2014, at building 680 on RAF Mildenhall, England. The emergency management flight conducts weekly CBRN survival skills classes to train and keep the base prepared to respond to specific CBRN threats. (U.S. Air Force photo/Senior Airman Kate Maurer/Released)

U.S. Air Force Airman 1st Class Eric Yancey, 352nd Special Operations Maintenance Squadron communication and navigation mission systems technician from Lowville, N.Y., dons his gas mask during a chemical, biological, radiological and nuclear training class Aug. 14, 2014, at building 680 on RAF Mildenhall, England. Before the practical application, Airmen learned how to properly don their mission-oriented protective posture suits and inspect their gas masks. (U.S. Air Force photo/Senior Airman Kate Maurer/Released)

U.S. Air Force Senior Airman Charles Fincher, 100th Aircraft Maintenance Squadron KC-135 Stratotanker crew chief from Douglasville, Ga., puts on his gloves during a chemical, biological, radiological and nuclear training class Aug. 14, 2014, at building 680 on RAF Mildenhall, England. During training, Airmen learned about Mission-Oriented Protective Postures and how to react in the event of a CBRN situation. (U.S. Air Force photo/Senior Airman Kate Maurer/Released)

U.S. Air Force Staff Sgt. Kevin Saunders, 100th Maintenance Group Quality Assurance inspector from Rockledge, Fla., checks an Airman’s Mission-Oriented Protective Posture gear during a chemical, biological, radiological and nuclear training class Aug. 14, 2014, at building 680 on RAF Mildenhall, England. During MOPP Level Four, personnel are required to wear the maximum amount provided protection equipment and clothing. (U.S. Air Force photo/Senior Airman Kate Maurer/Released)

U.S. Air Force Staff Sgt. Kevin Saunders, 100th Maintenance Group Quality Assurance inspector from Rockledge, Fla., checks the clip of an Airman’s Mission-Oriented Protective Posture gear during a chemical, biological, radiological and nuclear training class Aug. 14, 2014, at building 680 on RAF Mildenhall, England. Buddy checks involve checking each snap, strap and seal, and help ensure the maximum protection from possible CBRN contamination. (U.S. Air Force photo/Senior Airman Kate Maurer/Released)

U.S. Air Force Senior Airman Charles Fincher, 100th Aircraft Maintenance Squadron KC-135 Stratotanker crew chief from Douglasville, Ga., labels M-9 paper during a chemical, biological, radiological and nuclear training class Aug. 14, 2014, at building 680 on RAF Mildenhall, England. The M-9 paper is used as a way to detect and identify chemical weapons in a CBRN situation. (U.S. Air Force photo/Senior Airman Kate Maurer/Released)

M-9 paper shows simulated contamination during a chemical, biological, radiological and nuclear training class Aug. 14, 2014, at building 680 on RAF Mildenhall, England. While performing a simulated post-attack inspection, the Airmen checked the paper for changes in color to determine if there are chemical agents in the air. (U.S. Air Force photo/Senior Airman Kate Maurer/Released)