Staff Sgt. Matthew Wright, 28th Civil Engineer Squadron firefighter crew chief, places a rescue dummy onto a mass decontamination trailer conveyor belt during a hazardous material training exercise at Ellsworth Air Force Base, S.D., Oct. 9, 2015. The mass decontamination trailer and conveyor belt are used for situations where large numbers of victims are present and need to receive chemical sterilization after being contaminated. (U.S. Air Force photo by Airman Sadie Colbert/Released)