Bob Opett, a Hazardous Material Awareness and Operations course instructor, shows service members and firefighters how to properly seal the HazMat suit during the course at Marine Corps Air Station Iwakuni, Japan, Nov. 18, 2015. Provided by Bucks County Community College Department of Public Safety from Doylestown, Penn., the course is used to make individuals more aware of potential hazards and teach them initial response procedures. ( Marine Corps photo by Cpl. Carlos Cruz )

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