9/11 hijacker Mohamed Atta supposedly arrives in the US for the first time, flying from Prague to Newark on a tourist visa issued May 18 in Berlin. [Miami Herald, 9/22/2001; Australian Broadcasting Corporation, 11/12/2001] Official investigations will late assume that this is the first time Atta was in the US. However, there are reports that he was in the US before this (see September 1999, April 2000, and Late April-Mid-May 2000).