Firefighters from Marine Corps Air Station (MCAS) Iwakuni,

Firefighters from Marine Corps Air Station (MCAS) Iwakuni, Japan, Fire Station One wear hazardous materials (HAZMAT) suits inside the location of a chemical exposure drill for protection and pull a wagon with a cleaning substance to neutralize the HAZMAT as part of exercise Active Shield at MCAS Iwakuni, Oct. 18, 2017. Active shield is an annual exercise that tests the abilities of U.S. and Japanese forces to work alongside each other to protect and defend the air station and other U.S. assets in the region. (U.S. Marine Corps photo by Lance Cpl. Stephen Campbell)