The Fishers Fire Department was dispatched at about 12:20 p.m. Thursday to a report of a large fire in the warehouse at Advanced Radiant Systems, located at 12910 Ford Dr. The building also houses offices for Enterprise Rentals. Employees inside the warehouse attempted to fight the fire before calling 911. The building had no sprinkler or alarm systems. First-arriving firefighters found heavy smoke coming from the building and fire in the warehouse. A second alarm was immediately ordered. Two firefighters were treated for minor injuries later in the incident. The fire was marked under control at approximately 3:40 p.m. As of press time, no cause had been determined for the fire.