Staff. Sgt. Francis Bierman and Airman 1st Class Eric Ibarra, 28th Civil Engineer Squadron firefighters, strap role-player Emily Stevens, Western Dakota Technology College nurse student, onto a litter during a major accident response exercise here, April 30.The exercise was performed to test Ellsworth Airmen on their accident response capabilities in preparation for the upcoming air show. (U.S. Air Force photo by Airman 1st Class Corey Hook)