It was the worst day in the history of USA in 21th century. The entire world had witnessed effects of global terrorism!
Nearly 3,000 lives lost in the tragedy.
Hijackers desperately crashed American Airlines Flight 11 into floors 93 through 99 of the North Tower.
Hijackers desperately crashed United Airlines Flight 175 into floors 77 through 85 of the South Tower.
Hijackers deliberately crashed American Airlines Flight 77 into the Pentagon, near Washington, D.C.
The South Tower of WTC collapsed.
After getting info of the other attacks, passengers on United Airlines Flight 93 launched a counterattack on hijackers aboard their plane.
To try to recover control of the aircraft. Of that response, the hijackers crashed the plane into an empty field near Shanksville, Pa.
The North Tower collapsed, leaving the 16-acre World Trade Center site in destroy and collateral damage affecting all adjacent properties and streets.