11.   Mr. Manning, who took the morning shift with the baby, was still at home when the plane hit the north tower.

12.   Nor was it clear if the TV tower had been hit, although Chechen officials said the attack had failed.

13.   She was already outside when the second plane hit the other tower.

14.   She watched replays of the planes hitting the towers over and over, unable to tear herself away, yet agitated greatly by each new viewing.

15.   Some hit the tower directly, but others became disoriented and circled, eventually hitting guy wires or dying from exhaustion.

16.   Soon, though, word came that the tower had been hit by a commercial airliner.

17.   Suddenly, I heard a loud noise and thought another plane was going to hit the towers.

18.   The footage of the airplanes hitting the towers was extraordinary.

19.   The south tower was also hit at a lower point, meaning there was more weight bearing down on the damaged floors.

20.   Then the second tower was hit, and evacuation began.