25 command arrived o/s to a large 3 story twin with the 3rd floor fully involved and fire thru the roof. He immediately called for full company-23, engine-21 and the R.I.T. and air bank from 24. Crews were on an interior attack until conditions deteriorated and the evacuation tones were sounded. An exterior attack was then mounted until crews could re-enter the bldg to extinguish hot spots throughout the 2nd & 3rd floor of the fire bldg. There was a partial collapse of the front wall on the 3rd floor.
