Primary / Secondary School, School / University High school gymnasium fire controlled by sprinkler head (Rapid City, SD) July 21, 2013 viking210 In the early morning hours of July 18, 2013 RCFD responded to a fire alarm at St. Thomas More High School. First arriving Engine Company reported smoke and water coming from one of the Gym doors. A fire had started just inside the door where remnants from the gym floor refinishing were being stored. A lone sprinkler head activated as it was designed and held the fire to that area, reducing the potential for fire loss to the school.