This September 11 attack timeline shows how the events on 9/11 unfolded at the Twin Towers, Pentagon, ... His advisors assume this is a tragic accident. 8:55 a.m. - The South Tower is declared secure.

Two crashed into the Twin Towers, one struck the Pentagon, and the fourth, believed to be targeting the White House or U.S. Capitol, was brought down in a Pennsylvania field. Nearly 3,000 people ...

At first, everyone thought the crash was a tragic accident and therefore began an orderly evacuation of both towers, ... 10:28 a.m. - Twin Towers north building collapses Related stories.

They were then used as giant, guided missiles to crash into landmark buildings in New York and Washington. Two planes hit the Twin Towers of the World Trade Center in New York, with the second ...

The attacks on the World Trade Center caused massive damage and fires, leading to the collapse of both towers, with over 2,700 people killed. The attack on the Pentagon killed 184 people, and the ...

The 2001 attack on New York's Twin Towers had a profound impact on the US and across the globe. BBC Homepage. ... Preliminary report into Air India crash which killed 260 released .