Do you recall who this was?
Probably was Hani Hanjour.
He had been in the USA on and off since 1990.
The only one of the 19 who was a long time 'sleeper'.
Thanks.
Here's the story:
Atta shared an apartment in Hamburg with Jarrah and also with Atta's cousin Marwan al-Shehri. These three were apparently operational leaders of the 9/11 plot, as they are thought to have been at the controls of three of the planes.
Anyway, as we've read many times, Atta met twice in Prague with a senior, highly decorated Iraqi agent, Colonel Muhammed Khalil Ibrahim al-Ani, the first time in June, 2000, and again in the early part of April, 2001. But here's what's new to me: Jarrah and al-Shehri also met with an Iraqi agent or agents some time after Atta's second meeting, this time in the United Arab Emirates.
So we now have three leaders of the 9/11 attack (based on their being at the controls of three of the hijacked airliners) connected with Iraq, and and at least one of the three (Jarrah) specifically connected with anthrax (having accompanied al-Haznawi to the doctor). [I also think that Atta is connected to the anthrax mailings, although in a more circumstantial way, because of the apparent signature A-T-T-A in highlighted letters in two of the anthrax notes.]