United 93 is set to debut in movie theaters later this month. The production company has set up a message board on its web site, and among the first comments is this:

This is the most disgusting and shameless act of capitalizing on a horrible event to make money! And have no doubt..it's about making money! Forget the so called......"View of the shape of our world today"!!! Go watch Fahrenheit 9/11 for that! And this from the director of the Bourne supremacy? I suppose being good at something doesn't mean u have any integrity.....so I shouldn't be surprised.

And the families supporting this? My God! I mean really! At some point we have to say enough!!! Stop turning your undoubted grief and loss into a constant cash cow....

And so it goes. At the United 93 web site, you can see the trailer for the movie. It does what appears to be a step-by-step effort at setting up the scene from Sept. 11, 2001: A clear day, early reports of hijackings, the initial terror at the World Trade Center. And then the hijacking of Flight 93.

The trailer ends with a passenger, in the rear of the plane, speaking into a phone. "We know what happens if we just sit here and do nothing," he says. Fade to black.

Every 18 months or so, we get a burst of reminders of that day four-and-a-half years ago. A special hearing. A memorial. A presidential speech. The 9-11 Commission Hearings.

This week, we began seeing the trailers to this new movie, and we were given to hear new audio tapes of 911 operators in New York City on that day.

Here's what the 9-11 Commission wrote (PDF) about Flight 93 in its final report:

According to one call (from a passenger on the flight), they voted on whether to rush the terrorists in an attempt to retake the plane. They decided, and acted.

At 957, the passenger assault began. Several passengers had terminated phone calls with loved ones in order to join the revolt. One of the callers ended her message as follows: "Everyone's running up to first class. I've got to go. Bye."

The cockpit voice recorder captured the sounds of the passenger assault muffled by the intervening cockpit door. Some family members who listened to the recording report that they can hear the voice of a loved one among the din. We cannot identify whose voices can be heard. But the assault was sustained.

And, today, the U.S. Capitol is standing and flying the American Flag.

But the fight goes on. Just this weekend, Coalition forces in Iraq captured and killed several of the hijacker's allies fighting for al Qaeda there. From Sept. 11, 2001, from the minute the passengers of Flight 93 stormed that cockpit and killed al Qaeda terrorists in Shanksville, PA, until this very weekend, when U.S. forces helped kill al Qaeda terrorists in Iraq, the war has continued.

And for the fighting men and women still over there, it's likely that they remain at the ready, with their lives on the line, for the same reason a passenger on Flight 93 gave in a quick phone call to a loved one from that doomed plane.

"We know what happens if we just sit here and do nothing."