9/11 For the Record: Solving 9/11

... is that the rather boorish behaviour of Atta in America does not match with his polite and shy behaviour in Hamburg. Also there is the incident with dutch flight school owner Rudy Deckers, who learnes that Atta is from Hamburg and starts talking to Atta in german. The real Atta is fluent in german, however this Atta seems to be unpleasantly surprised and walkes away without saying anything. Let's...