Apartment Building, Residential Johnson City, TN – Sprinkler system extinguishes apartment fire before crews arrive October 20, 2015 viking210 Early Sunday morning the Johnson City Fire Department responded to the report of a cooking fire at an apartment complex on Plymouth Road. When fire crews arrived they found the fire had activated the sprinkler system, ultimately extinguishing the flames. Crews on scene say water and smoke had to be removed from four apartments. No injuries were reported. The American Red Cross was there to assist a family displaced by this fire. The Johnson City Fire Department says this fire reiterates how important it is to have working smoke detectors and functions sprinkler systems in your home.