Police are trying to determine what started a fire that damaged a Union Gap home. Firefighters could see flames from the back of the 4001 S 3rd Street house around 5 a.m. Tuesday, according to Yakima Fire Department (YFD) crews. Fire crews quickly extinguished the fire and searched the single-story home to make sure no one was inside. Crews remained on the scene for two hours to clean up and investigate. Reports said all family members were able to leave the home and no one was injured. Responders checked one family member for smoke inhalation.