Truck 3 responded to a mutual aid call with Station 6 for aerial assistance on a commercial structure fire on Lee Highway. Upon arrival, found a single-story, commercial structure with heavy fire showing from the roof. The structure was approximately 32,800 square feet with about 20,000 square feet of the structure involved. Truck 3 operated a ladder pipe for approximately 3.5 hours to assist with knocking down the fire. Quint 1 also operated a ladder pipe and several handlines were placed in service for overhaul. There were no injuries reported.