Since that report about the Ag. Dept. loan officer who said she had the encounter with Atta, about half of the news reports I've heard have presumed that what Atta planned to do was fill the passenger cabin with a tank...in order to fill it with fuel in order to use the plane as a smaller version of the 9-11 planes.
These reports don't mention the possibility that Atta was going to fill the tank with anthrax or some other noxious biological or chemical weapon.
The anthrax last year may have been domestic...but the press and the guvmint just seem cock-sure that it couldn't have been foreign origin. Got to find a white male right-winger to pin this one on!
Remember how, at first, we heard that scientists could determine the exact lab the anthrax came from? Genetic fingerprints, and all that? We don't hear any of that cocksure talk any more.