1.   Minutes later the second tower collapsed.

2.   Place two of the thinner ones on top of each other to form the second tower.

3.   Andruzzi made his way through the black smoke and got out just seconds before the second tower collapsed.

4.   As they worked, Cheney and Rice, still in the tunnel command center, saw the horrifying collapse of the second twin tower.

5.   A few minutes later, we climbed the second tower to the belfry, where we saw the famous bell.

6.   ABC showed striking new video, from a low angle, of the plane running through the second tower.

7.   After the second tower fell, the entire area was consumed with smoke, as if clouds had descended and enveloped the lower tip of Manhattan.

8.   But then the second tower collapsed.

9.   By the time I reached the back of her apartment building, the second tower had fallen, the entire area covered by dust and smoke.

10.   Evacuated from his office, he was standing on the sidewalk near Battery Park City when the second tower was hit.