Since i saw another post with a fake picture i decided to post this.
I have the file for a while now but didn't want to post it, wasn't sure how people would react to it.
It is the conversation of the traffic controller on duty at the time the aircrafts hit the towers.
You will hear the controller trying to make contact with the aircraft and two times you hear the hijackers say they 'have a bomb on board' - this resulted from an error made by the hijackers. They thought they where talking in the intercom but where actually talking into the main freq for the controller.
The controller doesn't know what's going on and asks other pilots of they heard it and asks them what they can make of it.
The hijackers can be heard twice mistakenly transmitting messages intended for the passengers over the Cleveland ARTCC frequency. Please note that this tape is not chronologically accurate; periods of dead air (silence) have been removed for brevity.
Click to listen