http://www.miraclebridge.com/wtcescape.html
Interesting reading.
"When we reached around the 20th floor, people in the front are shouting back, "Stay on the right side, the firefighters are coming up", so we stopped, stayed on the right side, waiting for the fireman to come by. There are around 7-8 fireman came up, every fireman are fully loaded, carrying heavy steel equipment, water pipes and gas tanks, their face is very grim and serious, they are not young. Once the firemen passed by, we resumed walking, after another 2-3 minutes, More firemen coming up, they all carry heavy steel hammer and various heavy tools. They are sweaty, their breathing is very heavy. One lady asked which floor they are going, they are heading up to the 80th floor, She told them good luck. Every time when a batch of firemen coming up, one of us will shout to let the rest know they are coming up, so we can stay on the right hand side to let the firemen pass, Some firemen are unable to keep walking due to the extreme heavy load on their back. I heard one fireman telling another to slow down and come up when he catches his breath, Their face is deadly serious and brave, with lots of perspiration."
