61.   When the tower next to theirs collapses, the lobby where Jules is standing is abruptly filled with darkness and debris.

62.   When the towers collapsed, Giuliani barely escaped injury.

63.   Which tower collapsed first, and how much time passed between the collisions and the respective collapses?

64.   When he reached the fourth floor, the tower collapsed, trapping him, one civilian and six firefighters.

65.   When the first tower collapsed, they were in the lobby of the Marriott Hotel next to the towers.

66.   Within minutes, the tower had collapsed.

67.   After the towers collapsed, rubble filled the street.

68.   Audiences were transfixed by the awful images from New York, where one World Trade Center tower collapsed.

69.   Audiences were transfixed by the awful images from New York, where both World Trade Center towers collapsed.

70.   Both towers collapsed after less than two hours.