Chemical, biological, radiological and nuclear defense Marines with Headquarters Company, Combat Logistics Regiment 17, 1st Marine Logistics Group, train Marines with the 13th Marine Expeditionary Unit during a hazardous material course aboard Camp Pendleton, Calif., Thursday, March 28, 2013. The course was designed to provide additional methods of detection at contaminated sites in order to prepare Marines for their deployment with the 13th MEU.