. >> i actually see a colleague of mine, lauren glassberg. duck below a car, and we stay there when the dust cloud rolls over us from the south tower collapse. >> all of the people were covered in this soot. it was just -- looked like a snow blizzard. >> we've been attacked, it's like world war ii. >> the mindset of a firefighter, try and find the most people that you can and help the most people that you can and kind of worry about yourself later. >> the second building has just come down. the second. everyone's being asked to get down, come down. >> the floor started to move. so we're saying, what's that? >> reporter: as the north tower collapsed, janelle was still inside. >> i just kept holding on to the railing. and before i could even stand back up, the rubble, the dust, the darkness, the walls, the earth opened. every time i reach that point it's like -- >> you're thinking everything is okay. >> i just felt everything -- i just hear the noise, so loud. the walls just opened up. and the dust is hitting on top of me. >> reporter: away fro