THE ATTACK

A wall of dust and smoke races through the streets of lower Manhattan.

People run as the top of one of the World Trade Center towers collapses.

The north tower was hit by American Airlines Flight 11, impacting the 95th to 102nd floors.
Seventy-six passengers, nine flight attendants, two pilots, and five hijackers perished onboard.
The north tower collapsed one hour and forty minutes after impact.
The south tower was hit by United Airlines Flight 175, impacting the 86th to 92nd floors.
Fifty-one passengers, seven flight attendants, two pilots, and five hijackers perished onboard.
The south tower collapsed fifty-six minutes after impact.