A controlled burn is the only fire we know of that goes down as the sirens from responding firefighters get louder. According to witnesses and the investigation into the TRE fire, that's exactly what happened on May 20 when neighbors reported seeing flames above the trees from a controlled burn.By the time firefighters arrived on scene, what was once a pretty roaring fire had been reduced to a smoldering pile. Residents who were burning had their permit, they were burning on a permissive day and it looked like they had the fire under control.A little counseling, a few instructions and …