Firefighter training at Alpena CRTC
Staff Sgt. Nate Grys is lowered into a large pipe during a confined space exercise conducted by the firefighters of the 179th Airlift Wing, Ohio Air National Guard, during a training deployment to the Alpena Combat Readiness Training Center, Mich., Aug. 20, 2014. The firefighters spent a week at Alpena, training on live-fire exercises involving a simulated structure fire and aircraft fire, and on various rescue scenarios. (U.S. Air National Guard photo by Tech. Sgt. Dan Heaton)