At 02:49hrs Station 58 was alerted for the Truck Company to respond to a high-risk structure fire in Stewartstown Borough, Station 54's first due area. Chief 54 (Walker) went on-scene with smoke showing from the building and requested the working fire assignment. Tower 58 assisted with interior and exterior ventilation, opening up the roof, salvage and overhaul. Crews operated for several hours, and the cause of the fire has been determined as arson by the Fire Marshal's office (PA State Police).