Senior Airman Jordan Lapoint, left, Staff Sgt. Matthew Wright, center, and Senior Airman Joshua Cristi, right, 28th Civil Engineer Squadron firefighters, work together to spread out a decontamination line mat during a hazardous material training exercise at Ellsworth Air Force Base, S.D., Oct. 9, 2015. The DECON line is used to sterilize responders to prevent any dangerous materials being brought back to non-contaminated zones. (U.S. Air Force photo by Airman Sadie Colbert/Released)