Thanks for the post, Jambe. I also think that the fact that the makers of this film came up with this information independently is highly significant. They should come forward with their sources.
I watched the program and the Able Danger allusion was just sort of dropped into the narrative. It seemed orphaned because it came out of nowhere and led nowhere. But make no mistake, the producers were offering no proof of their own that Atta and others had been identified by anybody prior to September 11, 2001.
The producers should have postponed the airing until they could have better understood the veracity and meaning of Able Danger.