U.S. Marine Corps Sgt. Lamarcus Williams, motor transportation mechanic and quality control chief with Combat Logistics Company 36, drains the transmission fluid from a high mobility multipurpose wheeled vehicle during chemical, biological, radiological and nuclear defense training at Marine Corps Air Station Iwakuni, Japan, Aug. 10, 2016. Marines, already in mission oriented protective posture gear, were evaluated on their ability to effectively detect, report, respond and operate in a simulated CBRN environment. When given the signal “gas, gas, gas,” Marines scrambled to don their M50 Joint Service General Purpose Masks before returning to work as if everything was normal. (U.S. Marine Corps photo by Lance Cpl. Joseph Abrego) - U.S. Marine Corps Sgt. Lamarcus Williams, motor transportation mechanic and quality control chief with Combat Logistics Company 36, drains the transmission fluid from a high mobility multipurpose wheeled vehicle during chemical, biological, radiological and nuclear defense training at Marine Corps Air Station Iwakuni, Japan, Aug. 10, 2016. Marines, already in mission oriented protective posture gear, were evaluated on their ability to effectively detect, report, respond and operate in a simulated CBRN environment. When given the signal “gas, gas, gas,” Marines scrambled to don their M50 Joint Service General Purpose Masks before returning to work as if everything was normal. (U.S. Marine Corps photo by Lance Cpl. Joseph Abrego)