Etna, PA – At 3:32 P.M. on May 9th, fire crews were dispatched to Wilson Street in Etna Borough for a residential structure fire. Crews arrived to find heavy fire conditions in the rear of the structure and quickly extending into an exposure. Crews quickly began to attack the fire as a second-alarm was requested. Firefighters were able to get the bulk of the fire knocked down but worked for almost an hour more chasing fire in both houses that extended throughout the walls. A third-alarm was eventually requested for additional manpower. Everyone who lived in the homes safely made it out, including two cats that were rescued. Four firefighters were treated on-scene for various medical issues. A total of six adults and four children were displaced. The fire, which appeared to begin on a rear porch, is under investigation.