I'd guess that if the Flight 93 victims families approved the movie, it won't be PC sanitized to portray muslims in a favorable light. I hope your wrong (for the right reasons).
I hate to say this, but I won't go by what the families approved. They keep gushing over that overtly Moslem "memorial" in PA. To me, I think they're the kinds who instead of anger which would be justified, go purely to anguish, and want to "stop the anger" and wave the olive branch. How anyone can approve of that atrocious travesty in PA is beyond me, but they've done it. So I won't take their word on anything.