At 2151 hours Station 3 (Bay District), Station 13 (Pax River) and EMS Station 39 were dispatched to the rear of the McKay's Store at 46075 Signature Ln for a reported Shed Fire. Engine 32 arrived on location at 2154 hours and advised they had a container on fire attached to the Building and requested the Box be upgraded to a Commercial Building Fire. At this time Engine 132 arrived on location and layed a supply line into Engine 32. At 2157 hours Station 9 (Calidfornia), Station 6 (Valley Lee), Truck 7 (Hollywood), Truck 83 (Solomons), and Water Supply 5 (Seventh District) were added to the call. Truck 7 responded with 5 volunteers and the Assistant Fire Chief a minute after dispatch. As other units started responding Engine 32 updated Communications and advised them they had a garbage compactor that was on fire and filling the building with smoke. The crews from Engine 32 and 132 contained the fire to the container while other units arrived. Truck 7 arrived on location at 2214 hours and took position on Side "A" of the structure. Command advised the Truck crew to start ventilating the Building and Chief 7A had the ventilation group. Truck 7 worked with Truck 83 and placed 4 box fans and 3 PPV fans in-service to ventilate the building. Units remained on location for over an hour until the smoke was cleared from the Building. Truck 7 cleared the call at 2326 hours.