see the roof lift, look straight through the glass blowout, see the back of the building to see the waldrophe chaos, battalion chief mcswain remains calm as he radios for help. >> go ahead. >> we have an explosion in the building. >> i got to stay calm, cool, level-headed, collected, because the moment that i escalate, the moment that i bring intensity out in my voice, then i'm going to have chaos on the fire ground. >> the enormous blast destroys the shopping mall. >> the aftermath would be what you would see in any type of a war zone after a bomb had gone off. the glass was blown out, the window frames, door frames had been thrown many, many yards away. the rear wall of the shopping center had been blown down. they had to tear down that shopping center and rebuild it. >> amazingly, the entire crew makes it out alive but several firefighters are hurt. >> injuries range from contusions to burns, bruises, debris, you know, cuts and things, and you know, some of them still have challenges dealing with it mentally. >> but chief mcswain says the harrowing incident only brings those in this tigh