Box 49-1 sent companies to the 1100 block of 4th Avenue in the Oberlin section of Swatara Township for smoke from a structure at 1300 hours. A line officer from Company 49 arrived and reported a working fire in a one story dwelling. A first alarm was struck bringing in additional surrounding companies. Truck 50 (Steelton) laid in from N. Harrisburg and 4th Avenue to side A and supplied Rescue 49 (Swatara Township) with water. Two lines were stretched making an aggressive attack knocking down the bulk of fire in about 10 minutes. Units remained on the scene for a while performing overhaul and assisting with investigation.