Apartment Building, Residential Rapid City, SD – Sprinkler stops fire on apartment balcony from spreading into unit August 25, 2015 viking210 A Saturday fire that started on an apartment unit’s balcony was stopped almost completely before it entered the unit, thanks to a sprinkler that activated in a bedroom. According to a press release from the Rapid City Fire Department, at 12:34 p.m. Saturday, firefighters went to the Homestead Garden Apartments at 4831 Homestead St. Everything on the balcony was damaged, the release said, the windows between the balcony and bedroom were broken, and the window blinds were melted. But the sprinkler in the bedroom doused the fire before it could cause more damage, and there were no injuries. No cause had been determined as of late Monday afternoon.