Shortly before noon this morning, pagers alerted Bryn Mawr and Ardmore firefighters of a house fire on County Line Road in Bryn Mawr. Dispatch notes informed firefighters of smoke and flames visible from a second floor window. First arriving police and fire units arrived to find heavy fire front a front second floor window of a three story twin. The working fire confirmed procedures brought Engines and Air 24 from Gladwyne and Rescue 21 from Penn Wynne. First in crews confirmed occupants were out of the house and made a great stop holding the bulk of the fire to a second floor bedroom. Rescue 21's crew stood by as the FAST Team and assisted with raising ground ladders. Crews were in service for an hour and a half.