Ellsworth Airmen ready for any emergency
Airman 1st Class David Jack, 28th Civil Engineer Squadron emergency management journeyman, is fitted in a level A suit before participating in an emergency management exercise, June 3, 2010, at Ellsworth Air Force Base, S.D. In real world incidents, level A suits are donned when emergency responders are in contact with an unknown variable in a chemical, biological, radiological or nuclear environment. (U.S. Air Force photo/Airman 1st Class Corey Hook)