A US jury has heard a chilling recording from one of the hijacked airlinerswhich crashed on September 11th 2001. In the last minutes before United Flight 93 crashed into a Pennsylvania field, a passenger urged others to help storm the cockpit and take on the hijackers. It is the first time the recording’s been played in public to the jury deciding whether September 11th conspirator Zacarias Moussaoui should be executed or spend his life in jail.Moussaoui showed little emotion as the courtroom listened spellbound to a recording of the hijackers who were believed to be aiming the plane at the U.S. Capitol or the White House in Washington. During the flight some passengers learned via mobile phone calls that three other planes had crashed into the World Trade Center in New York and the Pentagon. Moussaoui, an admitted al Qaeda member and only person charged in the United States in connection with the September 11 attacks, has pleaded guilty to six counts of conspiracy.