Around 1430, Engine 812B (121) was dispatched to Company 41’s area for the report of a construction office trailer on fire. First arriving companies found a trailer fully involved. Engine 812B was the first engine company to have a continuous water supply, an thus was utilized as the attack engine. Engine 812B flowed it’s deck gun as well as multiple hand lines. Company 12 operated for approximately 45 minutes before returning to service.