the north tower collapsed on top of them. he survived inside a pocket of stairwell b where the only way out was up and tim and dave join us live near in new york today. good morning both to of you. dave, as the evacuation was going on. there was one woman who was having trouble and you said you know what? i m going to stay here and help you, tell us about her: well, i was in tower 1 in b stairwell as you just said and i was coming down with a lot of people from my own job, the port authority police, and i saw harris, this woman sitting on the steps on the fifth floor. and the ladder company six and nine were inside looking for a chair to put her in to bring her downstairs she couldn t get up. myself and billy butler picked