Marines don level-b hazardous material suits to enter a contaminated building during Chemical, Biological, Radioactive and Nuclear Assessment and Consequence Management training at Marine Corps Base Camp Pendleton, Calif., Dec. 17. The training required Marines to enter a building contaminated with black mold and identify other potentially dangerous substances within the structure. The Marines are CBRN defense specialists with CBRN platoon, Headquarters Company, Headquarters Regiment, 1st Marine Logistics Group, I Marine Expeditionary Force. - Marines don level-b hazardous material suits to enter a contaminated building during Chemical, Biological, Radioactive and Nuclear Assessment and Consequence Management training at Marine Corps Base Camp Pendleton, Calif., Dec. 17. The training required Marines to enter a building contaminated with black mold and identify other potentially dangerous substances within the structure. The Marines are CBRN defense specialists with CBRN platoon, Headquarters Company, Headquarters Regiment, 1st Marine Logistics Group, I Marine Expeditionary Force.