On Thursday 12/15 at approximately 2015hrs Station 2 was alerted for mutual aid in Baltimore County for a building fire on Gunpowder Rd. Truck 2 and Engine Tanker 24 quickly responded. While enroute to the scene dispatch advised the caller stated they have a chimney fire with reports of smoke filling the attic. When Truck 2 was approaching the scene they observed and notified incoming units of fire showing from the rear of the house on the 2nd floor. Truck 2 was the first arriving unit followed closely by Engine Tanker 24. Crews from Hampstead, Arcadia, Parkton were able to make a quick attack and contain the fire to the wall around the chimney on the 2nd floor shortly after arrival. Crews operated on scene until approximately 2300hrs.