Mr. Felzenberg said staff investigators had become wary of the officer because he argued that Able Danger had identified Mr. Atta, an Egyptian, as having been in the United States in late 1999 or early 2000. The investigators knew this was impossible, Mr. Felzenberg said, since travel records confirmed that he had not entered the United States until June 2000.
Late 1999 would be around the millennium, now wouldn't it