Trailers for the new film, United 93, have been playing in major cities for some time now, and from the outraged reaction of some, it’s clear that not all of America is ready for a fictionalized account of one of the darkest days in the country’s history. But for those who worked on the film, it was a tribute to bravery, and nothing like the callous exploitation some fear it will be. “If this is a horror movie, it is an edifying one, a history lesson with the pulse of a world-on-the-line suspense film.”