An instructor with the Marine Corps Engineer Society teaches Marines with Headquarters and Service Company, 1st Battalion, 5th Marine Regiment, 1st Marine Division, how to inspect for hazardous chemicals during searchers and site exploitation training aboard Marine Corps Base Camp Pendleton, Calif., Oct. 27-29, 2015. The three-day training period provided 1/5 personnel with instruction on how to identify threats within a designated area and conduct systematic searches using appropriate detection equipment. - An instructor with the Marine Corps Engineer Society teaches Marines with Headquarters and Service Company, 1st Battalion, 5th Marine Regiment, 1st Marine Division, how to inspect for hazardous chemicals during searchers and site exploitation training aboard Marine Corps Base Camp Pendleton, Calif., Oct. 27-29, 2015. The three-day training period provided 1/5 personnel with instruction on how to identify threats within a designated area and conduct systematic searches using appropriate detection equipment.