Inferno Instruction Troops participate in a night burning exercise during Northern Strike 18 at Fort Grayling, Mich., Aug. 14, 2018. Service members from Michigan, Ohio and Tennessee worked with troops from Latvia, Estonia and Bulgaria. Air National Guard photo by Staff. Sgt. Bethany Rizor SHARE IMAGE: Download Image: Full Size (6.2 MB) Photo By: Staff Sgt. Bethany Rizor VIRIN: 180814-Z-KY051-266C.JPG Photo Gallery