I was astounded at the early findings also. Someone had to be watching them. Did they lose track of Atta? If I remember correctly, Atta was running up and down the coast the last few days before 9-11 in rental cars.
Well, we know that Able Danger was well aware of them. And didn't a Colleen somebody from the FBI testify to the 9/11 Commission that they'd been watching them and were receiving reports from flight schools that the guys only wanted to learn to fly, not land?