Video by: Mike Nester. Video info: As kids were out on the town trick or treating a fire broke out in a home in the 100 Blk of Mercer St, first arriving crews had heavy fire in the middle of a row home with fire quickly extending. As crews chased the flames 4 homes suffered extensive smoke and fire damage with flames shooting through the roof at one point. Two people were taken to the hospital with reported non fire related asthma attacks, and crews continued to battle the fire well into the night…