[eno_]

I think this is simpler than you might think. The press had to be able to plan at least a few days ahead. It should be possible to determine how much in advance Atta made his travel arrangements. If he could not have known, well, it's just a freaky coincidence. If a sympathetic person in the Washington press corp could have told him details of the President's itinerary before Atta made travel plans, then it is clear. Or it might even have been publicly available information. In either case, it is possible to determine if Atta could plausibly have known the President would be there.

[swarthyguy]

>publicly available information

Bush's schedule was probably posted on the website. How they might have known where he would be staying.....