made a reference to the previous admission number and noted that it was not a new entry. IG report is disputed by Lt. Col. Shaffer and other Able Danger team members, some of whom were never interviewed by the IG's office nor the 9/11 commission. Congressman Weldon also claims the report was a hurried, botched up investigation that was intended to close the books on the subject rather than report on the facts. For example this lead was never followed: "Normen Pentolino, operations manager at the Hollywood store, said two cashiers told FBI agents they might have recognized Atta, but weren't certain. Sources inside the store said Atta may have held a BJ's membership card for more than two years." Timing Kevin Drum, writing for The Washington Monthly notes that reports of the precise date at which the information was allegedly passed to the FBI vary considerably. It is most unlikely that Able Danger would have identified a terrorist called "Mohamed Atta" before May 2000. Since 9/11, of course, we have retrieved every scrap of information ever known about Mohamed Atta, so we know what information would have been available to the Able Danger data mining operation. And what we know is that Mohamed Atta sent his first email to friends in the U.S. in March 2000 and received his first U.S. visa on May 18, 2000. Moreover, that was the first time he had ever gone by the name "Mohamed Atta." His full name is "Mohamed Mohamed el-Amir Awad el-Sayed Atta", and prior to 2000 he went by "Mohamed el-Amir". Congressional hearings Senate Judiciary Committee Chairman Arlen Specter held a hearing on September 21, 2005, looking into the facts about Able Danger. However, Lt. Col. Shaffer and the other four members of Able Danger were ordered not to testify by the Department of Defense. Senator Specter decided to go forward with the hearings anyway. Senator Specter wondered if the Posse Comitatus Act may have been the reason Defense Department attorneys would not allow Able Danger to turn over information to the FBI. The Posse Comitatus Act prevents the military from being engaged in law enforcement activities, including gathering information on U.S. persons, despite the aliens were not specifically United States citizens. Speaking on behalf of Lt. Col. Shaffer, attorney Mark Zaid testified "Those within Able Danger were confident they weren't compiling information on US persons. They were potentially people