9/11

There are many thing that I know about the events of 9/11. For one many people hung from the windows of the burning building but eventually had to let go because it began to get too hot to hold on any longer. what I don't understand is why there weren't any helicopters to help those people who were hanging off windows. I feel like if they had rescuing helicopters there would have been a lot of survivors. I also remember how many firefighters died trying to rescue those trapped, and I adore and praised them for that. For not thinking of only their safety but others too.