Mr. Kleinsmith and the two colleagues who testified with him in [a House Armed Services Committee] open session are convinced that had the information they developed been acted on, not only 9/11, but also the October 2000, attack on the destroyer USS Cole in which 17 sailors died could have been prevented. Through computer scanning of some 2.5 terabytes of classified and unclassified data, the Able Danger team identified five nodes" of al-Qaeda activity. One was in Brooklyn. Another was in the port of Aden in Yemen, where the USS Cole was attacked. Able Danger linked Mohamed Atta and three other 9/11 hijackers to the Brooklyn cell, said Lt. Col. Tony Shaffer, who was the liaison between the Defense Intelligence Agency and the Able Danger team. Colonel Shaffer testified he tried three times to have Able Danger data on the Brooklyn cell presented to the FBI, but that on each occasion Pentagon lawyers forbade the meeting. In a commentary in the Wall [Street] Journal last November, Louis Freeh, who was FBI director at the time, said that if he had been told about what Able Danger had learned, 9/11 likely would have been prevented. In March, 2000, Mr. Kleinsmith was ordered to stop all work on Able Danger, and, later, to delete all the information collected. It is clear there is a cover-up. One would think a Washington press corps obsessing about a hunting accident in Texas would be more curious about it.