The morning of September 11, 2001, two airliner hijacked by terrorists were crashed into the New York World Trade Center building and World Trade Center building two, two buildings have collapsed in the attack, the rest of the world trade center 5 buildings collapsed under shock and also destroyed; 9 am, a hijacked the plane crashed into the Pentagon in Washington's The Pentagon, The Pentagon local structural damage and collapse.
On the eve of this year's 9. 11 anniversary, two pillars of the world trade center, Petronas Twin Towers, symbolizing the destruction of the "9. 11" terrorist attacks, illuminated the night sky.
The "911" incident was the most serious terrorist attack on the United States, with the total number of victims as high as 2996.