On September 11. This Saturday is it, exactly 20 years, since the horrifying terrorist attack on the twin towers at World Trade Center.

Early Tuesday morning September 11th, several Islamic extremists from the terrorist group al-Qaeda, in disguise as normal passengers, goes on board on four different airplanes.

Not long after comes in another phone call, from a crew member on airplane 175, it's announced that the plane has been hijacked. Now the air traffic control is asking for military assistance to find what’s going on.

The firemen begin to evacuate people from the southern tower at 09.03 am, but it’s too late and airplane 175 flies into the southern tower while millions of people watch it live on TV.