http://slate.msn.com/id/2124546/
with a funny and yet very though provoking comment.
In tonight's National Geographic program, "Inside 9/11", there was a segment concerning what I believe were intelligence officers at McDill Air Force Base, Florida. They had a chart of terrorist suspects which included pictures of Mohammad Atta and Marwan al-Shehhi. They decided no intelligence sharing regarding these suspects were possible, since they were in the country on valid visas. This dovetails with what Lt. Col. Shaffer has been saying about Able Danger. This could be independent corroboration of his story.