The Defense Department's inspector general has concluded that a top secret intelligence-gathering program did not identify Mohamed Atta or any other hijacker before the Sept. 11, 2001, attacks, determining that there is no evidence to substantiate claims that Atta's name and photograph were on charts collected by military officials before the strikes. Pentagon officials said that the recollections of several officials involved in the Able Danger" data-mining operation "were not accurate" and that a chart they said included a blurry image of Atta and his name never existed. The report concluded that there were no efforts to prevent contact between the Pentagon group and the FBI. The investigation began after members of Congress raised concerns over reports that Navy Capt. Scott Philpott and Army Reserve Lt. Col. Anthony Shaffer remembered seeing Atta's photograph on documents collected by the intelligence program, and that the commission investigating the attacks had ignored their assertions. The assertions gained considerable steam when Rep. Curt Weldon (R-Pa.) said...that, two weeks after the Sept. 11 attacks, he presented White House officials with a chart that depicted people affiliated with al-Qaeda, including lead hijacker Atta. "I am appalled that the DoD IG would expect the American people to actually consider this a full and thorough investigation," Weldon said. "I question their motives and the content of the report, and I reject the conclusions they have drawn." Shaffer has consistently maintained that he believes he saw Atta's image.