There was a whole section of one part of the building that collapsed, the rooms, the hallways, the staircases -- there was a pretty major collapse. When you see the building in the back here, the back of the building collapsed, and some areas in the front of the building collapsed.

Chris Kear

With the extent of the fire and the volume of fire, the conditions were just too unbearable where firefighters went in, and they just could not locate the firefighter, and they had to back out.