Nursing Home/Senior Living, Residential Sprinklers assist firefighters in retirement home fire (Tucson, AZ) May 20, 2014 viking210 A three-story retirement home reported a fire the morning of Friday, May 16. Smoke filled the first floor, and firefighters responded to the water flow alarm at the building. The facility was equipped with fire sprinklers, which extinguished most of the fire; firefighters arrived and put out the rest. A fire inspector reported that the cause of the fire was accidental; oil soaked towels spontaneously ignited because of a chemical reaction. There were no injuries reported.