This guy worked on the chart.
In addition, James Smith, a former employee of a defense contractor, says he helped create a chart in 2000 for the Able Danger program that included Mr. Atta's photograph and name. According to Smith, Atta's name and photograph were obtained through a private researcher in California who was paid to gather the information from contacts in the Middle East. Smith says he retained a copy of the chart for some time, posting it on his office wall at Andrews Air Force Base. Ironically, considering the apparent role of the Clinton administration's wall in this story, Smith recalls that the chart became stuck to his wall at the air base, and was impossible to remove when he switched jobs.
Sorry, I did not cite the source of that last post. It came from the NYT's
next question is who was the private contractor.