occasions to explain Able Danger's work. On September 15, 2005, Weldon asserted that he had identified an employee who had been ordered to destroy the 2.5 terabytes (TB) of data collected by Able Danger two years before the 9/11 attack. Weldon changes his story A Time magazine article dated August 14, 2005, reports that Weldon admitted he is no longer sure that Atta's name was on the chart he presented to Hadley and that he was unable to verify whether this was the case, having handed over his only copy, and that a reconstruction was used for post-9/11 presentations. Weldon gave a talk at the Heritage Foundation with a chart he described as the one handed over on May 23, 2002. However, a week later he referred reporters to a recently reconstructed version of the chart in his office where, among dozens of names and photos of terrorists from around the world, there was a color mug shot of Mohammad Atta, circled in black marker. Comments by members of the Able Danger team Lt. Col. Anthony Shaffer After Weldon's assertions were disputed, Lt. Col. Anthony Shaffer, a member of the Able Danger team, identified himself as Weldon's source. Shaffer claimed that he alerted the FBI in September 2000 about the information uncovered by the secret military unit "Able Danger", but he alleges three meetings he set up with bureau officials were blocked by military lawyers. Shaffer, who at the time worked for the Defense Intelligence Agency, claims he communicated to members of the 9/11 Commission that Able Danger had identified two of the three cells responsible for 9/11 prior to the attacks, but the Commission did not include this information in their final report. Shaffer specifically states that in January 2000, Able Danger data-mining revealed the existence of a 'Brooklyn' Al-Qaeda cell connected to the "Blind Sheik" Omar Abdel-Rahman, as well as two other cells overseas. Shaffer & Philpott examined this chart of Al Qaeda suspected operatives, containing names & photos, and Philpott pointed out one particular sinister and "scary looking dude" -- Mohammed Atta. However, on December 22, 2006, a 16-month investigation by the Senate Intelligence Committee concluded that Able Danger, "did not identify Mohamed Atta or any other 9/11 hijacker at any time prior to September 11, 2001,". The Defense Department's inspector general (DoD OIG) made a similar conclusion. Shaffer's lawyer, Mark Zaid, has revealed that Shaffer had