At 0251 hours West Shore companies were dispatched to 223 Bosler Avenue in the Borough of Lemoyne for a bedroom fire. Headquarters advised the responding on duty chief that PD was on location reporting fully involved. Engine 2-10 (New Cumberland) arrived to the front of the structure and was supplied by Squad 13 from a hydrant at 3rd and Bosler Streets. Command reported heavy fire to the rear of an occupied, 2.5 story, duplex. Several lines were stretched and after a brief attempt at an interior attack crews were evacuated from the building. Several hand lines and a portable master stream were used to knock down the bulk of the fire. A second alarm was requested for manpower bringing in companies from York and Dauphin Counties. The fire was placed under control in about an hour with crews performing overhaul and salvage operations before returning to service.