Other / Not Specified, Other Business Sprinklers limit damage at commercial building fire (Chattanooga, TN) April 8, 2014 viking210 When firefighters arrived in response to a commercial building fire around 11 p.m. on Saturday, they found that the building’s doors and windows had been broken out. The fire sprinkler system had activated and put the fire out. Investigations show that the fire was set intentionally; no injuries were reported.