9/11

The video sequence shows the Twin Towers of the World Trade Center standing in a city street, followed by one tower collapsing in a massive cloud of smoke and debris, then a firefighter raising an American flag amidst the wreckage, a memorial pool with water cascading down its sides, the new One World Trade Center skyscraper with a news banner announcing its opening, and finally a close-up of the illuminated spire of the new tower against a cloudy sky. The main subjects are the buildings and the flag, with the key events being the collapse of the original towers, the raising of the flag, and t