Shortly before 1500 hours, Engine Co.37 and Chief 37 were alerted on the 17 box for a reported house on fire, in the 4100 block of Will Street. The first arriving engine company went on scene and reported fire showing from the basement windows on the alpha side. Engine Co.37 arrived and was directed by command to stretch to division one via side alpha. Chief 37 was assigned the division one supervisor position. The crew entered to find zero visibility holding the stairs as well as checking for extension on division one. The crew assisted other units with opening up and extinguishing hot spots.