During the overnight hours, Rescue 34 was part of the 2nd alarm assignemnt for the Building Fire in Penn Twp (63 District). 1st arriving crews were met with heavy fire in a townhouse complex with exposure problems and possible entrapment. 1st alarm companies did a great job establishing water supplies, extinguishing the bulk of the fire and performing searches. 2nd alarm companies assisted with overhaul, ventilation and additional searches. The Rescue was out 2.5 hrs.