fire from the outside, but even that has its risks. norum is concerned the old building will not be able to withstand the heat of the fire, and the weight of the water being pumped in to fight it. >> we were providing 500 gallons per minute at these locations. which leads to the dead load in the building. >> the city's buildings department tells norm that the structure is stable because there aren't any cracks or bulges in the walls but he doesn't take any chances and establishes a wide perimeter or collapse zone around it. >> we move those trucks and the tower ladders, are pieces of equipment, and the hose lines away from the building to the opposite side of the street. >> firefighters are also repositioned across the street and continue their efforts to control the blaze. norum's instincts are right. after nine hours of fire and thousands of gallons of water pumped in, the walls suddenly give way, raining bricks and