At 1530 hours a 21 box was transmitted for a report of a fire in the building at the Tuckers Ice Arena in the 5th battalion. Units arrived to find smoke showing and a working fire was declared. Command requested a second alarm assignment to be transmitted, bringing Truck Co. 37 to scene. Truck Co. 37 arrived and positioned on side Delta and set up to operate. The truck crew worked various tasks before returning to service approximately three hours later.