11.   Military and civilian employees watched in astonishment and horror as smoke engulfed the two towers and shock enveloped New York City.

12.   On the Brooklyn Heights Promenade, people stared at the spot where the two towers had been.

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

14.   Soon afterward, the other tower toppled, and no one has seen Ramos since.

15.   The other tower had collapsed.

16.   The other tower fell about a half-hour after that.

17.   The other tower fell about half an hour after that.

18.   The three towers would be built by a hotel builder, Centex Rooney, with much lower costs than a shipyard.

19.   The two towers would be built to look like the existing ones.