The danger of Able Danger - at least for those who enjoy believing everything they are told - is that it completely undermines the whole basis for the Official Story of what happened on September 11, 2001. It's a timing thing. The FBI has been very careful to have Atta arriving for the first time in the United States in June 2000. Their simple reason for the certainty of arrival time is that he is documented to have been attending school in Hamburg up to May 2000. Able Danger puts Atta in the United States, as head of a Brooklyn cell of terrorists, at least as early as January or February 2000, and probably back into 1999. There have been more recent attempts to obfuscate the issue by claiming that the information, including the picture of Atta, came from surveillance overseas, or claiming that Atta's participation in the Brooklyn cell was in September 2000 (impossible, as Atta was otherwise engaged by that time; also note this 'usually reliable source' making a fool of himself carrying the water for the Pentagon spinners), but the original information is clear that the data mining with respect to Atta was with respect to his American activities at least as early as early 2000. Therefore, the terrorist Atta can't be the same guy as the student in Hamburg. However, the entire story of September 11 is constructed on that identity. The biography of the Egyptian Atta, how he became radicalized attending a mosque in Hamburg, formed part of the al Qaeda terrorist cell in Hamburg, and then came to America to lead a terrorist attack, depends on the American 'Atta' being the same guy as the Egyptian/Hamburg Atta (by 'Atta', I mean the guy who assumed the Atta identity for his operations in the United States). Able Danger confirms that they are not the same guy, and that we really know nothing about the background of the American 'Atta'. Since we can now see that the FBI story with respect to Atta is a lie, and we have no way of knowing anything about who he really was or what motivated him, we can see that the stories about every other one of the nineteen is similarly flawed. If the FBI can lie about Atta, they can lie about all of them. Suddenly, the connection between al Qaeda and September 11, which depended entirely on the connections to the Hamburg radical Muslim cell, disappears.
Most of the hijackers are just ciphers, a name and a face and a date of arrival. We seem to know a lot about Ziad Jarrah, but his FBI story has the same flaw as the Atta story, in that we rely entirely on the FBI to prove that the American Jarrah was a radical Islamist terrorist. All the independent evidence - from family and friends and Hamburg acquaintances - is that it was impossible for Jarrah to have had anything to do with 9-11. He liked fast cars - he was caught for speeding in the United States - and parties, and was described by the Imam in Hamburg as a 'weak' Muslim who had to be practically dragged to the mosque. The most plausible story about Jarrah is the one believed by his family, that he was tricked into being on the plane, and was not a terrorist but just another victim of the plot.
Jarrah as a patsy would be very easy to set up, especially if the Hamburg cell was really just a 'honey pot' created by intelligence agents to provide the evidential background to 9-11. They would have been looking for a collection of patsies, including a young, devout, Muslim male from the Middle East, who had professed a desire to learn flying in the United States. Jarrah wasn't devout, but he fit the rest of the pattern perfectly, so he would have to do. They would give him some plausible story - say, that they were going into business to sell crop dusters in the Middle East - and offer to partly pay for Jarrah's American adventure if he would assist them in their business operations in the U. S. Jarrah didn't need the money - his father's wedding present to him was to be a Mercedes - but a guy like Jarrah could always use a few extra bucks. Jarrah attended a flying school just down the road from the school that 'Atta' attended, lived in an apartment around the corner from where 'Atta' lived, started his role in the 9-11 plot by moving to a hotel near the hotel used by 'Atta', and bought a ticket to fly on the plane that crashed in Pennsylvania. All of this could easily have been set up by 'Atta', all as part of the assistance Jarrah was supposedly giving 'Atta' in his American business. After 'Atta' thus implicated Jarrah in the plot, the Americans shot down the plane, and you have an instant patsy. The only thing really tying Jarrah to the terrorist plot are the voice recording of the terrorist pilot on the plane - which could have been anybody or even an FBI fake - and his connections to 'Atta', which we know from Able Danger doesn't prove anything.
Of all the nineteen, there are only a few for whom we seem to have some independent information, and all of the information, again, comes through the FBI. Since we are certain the FBI is lying about Atta, how can we rely on their information on any of the nineteen? Hani Hanjour had a life in the United States prior to the hijackings, obtained a pilot's license (almost certainly fraudulently, as he never learned how to fly a plane), and was known to at least one independent person, Aukai Collins, who wrote that he thought that Hanjour was not a committed Muslim, and was not the kind of guy to give up his life for this cause. Coupled with the fact that the people who were teaching him to fly felt he couldn't fly a Cessna, we have another example of someone who doesn't fit the profile as the pilot of Flight 77, and whose ties to the plot depend entirely on connections with the group associated with the American 'Atta'.
The entire operation was a combination of intelligence officers, including the American 'Atta', and hired-help patsies tricked into implicating themselves in the plot. The patsies, or their identities, were chosen based on being Middle Eastern Muslim males who vaguely fit the profiles of potential terrorists. Some of them, but not the main ones, may actually have had real connections to Islamist radical groups, but it is just as likely that their identities were stolen identities which were chosen based on the fact that they could be traced back to people who could be connected to terrorism (some families of identified terrorists claim that they haven't seen their relatives since they went off to places like Kashmir or Bosnia, places where they might have died and their identities been harvested as potential terrorist identities). Everything - and I mean the entire 9-11 fantasy story - depends on their connections to Atta, or at least the cell in Hamburg that Atta is supposed to have joined. Since the revelations on Able Danger prove that the story of Atta must be a fraud, the Official Story must be a fraud. The 9-11 Commission knew about the Able Danger story, but omitted it from their report, obviously because it didn't match the Official Story.
In conclusion, I should briefly comment on the issue of 'Atta' and identification. The only guy who seems to be alive to the deep dangers in the Able Danger revelations is Mark Zaid, the attorney for Lt. Col. Anthony Shaffer, one of the Pentagon whistleblowers. Zaid's name comes up often in these matters of Washington skullduggery, and his awareness of the problem indicated that he is probably worth whatever his clients are paying him. He has been trying to make the point that the identification of Atta is just based on the name and not any photo obtained in the United States, and could thus be entirely irrelevant to the issue of whether the Pentagon could have stopped the plot at an early date. The 'Mohamed Atta' name could have been the name of a completely innocent guy caught by Pentagon data sweeping. This won't do. The Pentagon not only had Atta's name, but his picture at the top of their giant - and notably still missing - chart ("a color mug shot of Mohammad Atta, circled in black marker"), and had gone to the trouble of putting a yellow sticky note over the face of 'Atta'. This is supposed to mean that 'Atta' was off limits due to legal restrictions, but if that was the case, they should have had a sticky note over every entry in the chart. The note had the paradoxical effect of indicating that the face of 'Atta' was particularly important, and allowed Pentagon officials to identify him as the guy on their chart (based in one case on the look of his cheekbones), even though they hadn't seen the chart for a number of years. The identification of 'Atta' by recent Pentagon whistleblowers was based on the fact that the FBI pictures circulated of the infamous terrorist looked like the guy with the yellow flag on the chart. They remembered him, not because they remembered one name on a chart with hundreds, or thousands of names, but because of his picture, and the prominence of that picture on the chart. 'Atta' was Terrorist No. 1.
Weldon and the Pentagon, who for various reasons are trying to eliminate American constitutional and legal restrictions against Pentagon spying on Americans (that spying is already going on, and they just want American elected officials to cry 'uncle' and retroactively legalize and constitutionalize what the Pentagon is doing anyway), both claim that the sticky note indicated that Pentagon lawyers had stifled investigation of terrorism by the Pentagon, restrictions which should now be eliminated (the idea that the investigation of Atta was somehow illegal has been thoroughly debunked, and is just part of the Weldon/Pentagon trick to allow the Pentagon more snooping powers). Actually, the sticky note indicates that 'Atta' was off limits, that he was somehow protected against arrest by the authorities as he worked on his plot. We have seen numerous instances where this 'license to kill' worked, cases where 'Atta' had run-ins with American authority figures and was always allowed to walk.
We have also seen other notable instances where 'Atta' was recognized in the United States prior to June 2000, despite the fact that the Official Story is that he had never been in the United States prior to that time. One woman recognized him - and her recognition must have been based on a similarity to the published picture and not on his name - as attending an American officers' school in Alabama. Johnell Bryant, an official with the Department of Agriculture, had a particularly memorable encounter with him in the spring of 2000 in Florida, when he seemed to be ensuring that he not only would be remembered, but remembered as a potential terrorist. 'Atta' was in the United States at a time when the Egyptian/Hamburg Atta couldn't have been, the Pentagon was aware of him being in the United States from the beginning of his activities, he was under official American government protection, and he wasn't a Muslim terrorist. My best guess is that he was a highly trained intelligence agent, a guy who on at least one account spoke fluent Hebrew, hired to fake an Islamic extremist terrorist attack against the United States. Weldon and the Pentagon should have let sleeping dogs lie.