Two city firefighters were injured Monday when a wall collapsed while multiple fire crews were battling a massive blaze in a large storage building on Newell Street. The two unidentified firefighters were taken by ambulance to Samaritan Medical Center, one on a stretcher. Fire Chief Dale C. Herman confirmed one of the injured firefighters was later transferred to a Syracuse hospital. The extent of the injuries and their conditions were unknown Monday night. Their families were notified, Chief Herman said. Shortly before 6 p.m., crews were called to the sprawling building at 108 Newell St. that sits behind Derouin Plumbing & Heating Inc. and next to Adirondack River Outfitters.