First, I'd like to take a moment to honor those who died Sept. 11, 2001, at Ground Zero.
I came across this independent science fiction short film about the 9/11 terrorist attacks. It's part of the Damon Dark series written and directed by Adrian Sherlock.
In the short film, time travelers Damon and Gary arrive in the north tower of the World Trade Center on the morning of the attacks. They can save those in the tower, but they would change history by doing so. It posses the question of what will happen to history if nobody died in the attacks? What choice would you make if you were in this situation?