Clean Caution Michigan Air National Guard firefighters work with Latvian firefighters during a simulated chemical spill at Alpena Combat Readiness Training Center, Mich., Aug. 2, 2021. The event was part of Northern Strike, a multi-component, multinational exercise designed to build readiness and enhance interoperability with allied forces. SHARE: Download: Full Size (1.85 MB) Tags: Air Force, National Guard Credit: Air Force Senior Airman Ryan Bishop VIRIN: 210802-Z-NK626-0040M.JPG Photo Gallery