At approximately 0217 hrs the Tuck was dispatched to the intersection of Addison Rd. and Martin Luther King Hwy. for a reported building on fire. Truck 37 and Chief 37-B went en route with 5 volunteers. Engine company 8 arrived with the corrected address of 5929 Martin Luther King Hwy, and advised that they had a fire in the building holding all units. Truck 37 arrived assuming the Rapid Intervention Duties. The Truck did a 360 of the structure, removed roll up doors on side alpha for egress and stood by with RIT equipment while crews operating found a freezer on fire and held companies 8, 33, and 22. Chief 37 B was assigned Safety.  Truck 37 cleared at 0310.