A Chemical Biological Incident Response Force technical rescue Marine stabilizes a fallen concrete slab to ensure the safety of other CBIRF personnel during Exercise Scarlet Response held at Guardian Center, Ga., Aug. 17. The Marines responded to a simulated nuclear blast, which stopped traffic and contaminated the town, during a 48-hour exercise. Marines searched for, rescued and decontaminated role players and injured dummies. (U.S. Marine Corps photo by Pfc. Dylan Bowyer/Released) - A Chemical Biological Incident Response Force technical rescue Marine stabilizes a fallen concrete slab to ensure the safety of other CBIRF personnel during Exercise Scarlet Response held at Guardian Center, Ga., Aug. 17. The Marines responded to a simulated nuclear blast, which stopped traffic and contaminated the town, during a 48-hour exercise. Marines searched for, rescued and decontaminated role players and injured dummies. (U.S. Marine Corps photo by Pfc. Dylan Bowyer/Released)