I think it could be a great way for a game about a fictional WW3 to open with.
''It's 9-11-2011. Tyler (9, protagonist), his brother (John, 11), father (James, 42) and mother (Abigail, 39) are in New York City. While walking in Manhattan, they all hear a loud noise: a plane. They look back, see the plane, follow it with their eyes and witness it crash into one of the World Trace Center towers. Everyone is shocked, a plane just crashed into the WTC. Everyone thinks this is an accident and watches the tower, then the second plane hits the second tower. It's obvious it's an terrorist attack now. While Tyler, his brother and mom want to run away, his father goes to the towers since he wants to help the victims. While the 3 are running away from the tower, they hear a loud noise, they look back and notice the first tower collapsing. Shocked and afraid of James' live, they turn the back to the towers. *jump in time a few hours* Tyler, John and their mother Abigail are at home, still not knowing James' faith. When he isn't home at night, Abigail gets worried and starts calling all hospitals, seeing if there's a James somewhere, but she can't get through.
*jump in time 2 days* 9-13-2011: The phone rings: James' death is confirmed: while walking/running away after helping some victims, he got hit by debris from the falling tower.
*jump in time 5 days* 9-18-2011: The United States of America declares war to the terrorists who did all this, and everyone who will protect these terrorist. They announce they'll put a large portion of their troops into the middle-east, searching for their terrorist. As the president is speaking, the operation is already underway, and the first US Soldiers are already in their planes, going to the middle-east. The first vehicles are also already underway, and the first drones are already being made.
*jump in time 1 year* 10-12-2012: Iran, Iraq, Afghanistan and Syria have all resisted, and war has broken out.
*jump in time 10 years* 6-24-2022: Full on war. The US and western European countries are fighting Iran, Iraq, Afghanistan and Syria. Tyler is in the American army, seeking revenge for the death of his father.