At 16:08 this afternoon, the alarm was sent for the Building Fire in Southwest Greensburg (24 District). 1st arriving crews were met with heavy fire from a 9-unit building with reports of people trapped. Crews began to fight the fire and conduct searches, while evacuating residents out of the structure. Rescue 34 arrived as part of the 1st alarm assignment, and established RIT with Rescue 104, and also assisted intitally with throwing ladders and ventilating. In the early stages of the incident the RIT crews were activated twice, assisting firefighters out of the structure after becoming trapped. The fire eventually went to 3 alarms with the Rescue crew operating for 3 hours.