ELLSWORTH AIR FORCE BASE, S.D. -- Airman 1st Class Matthew Hung, 28th Civil Engineer Squadron emergency management journeyman, puts on a chemical protection suit during a joint training mission with the Army National Guard and the Rapid City Fire Department in Rapid City, S.D., Nov. 4. The chemical protective suit is designed to keep Airman Hung safe from simulated chemicals and radiation during the training. (U.S. Air Force photo/Senior Airman Anthony Sanchelli)