The letters were dated 09-11. One thought is that the envelopes probably wouldn't have been prepared as far in advance of Sept. 11 as this suggests, since the date of the WTC/Pentagon attack could always have been changed, for a variety of reasons. (On the other hand, we do have the Bin Ladin Group domain name expiring on 9/11/2001, having been registered on 9/11/2000, so maybe that planned date was considered absolutely definitive and not to be changed.)
If the envelopes had been filled in Florida, the argument goes, there might have been unintended infections of people there, and we don't see that. Or do we? What about the AMI infections? I'm not sure this really makes sense (I can't imagine them filling the envelopes in, say, a room at the AMI Building, after all), but maybe there's something here which would explain the AMI contamination?
I don't see why the date couldn't have been chosen months in advance, and probably was.
When I am planning a trip abroad, I make my airline reservations first before I make other detailed plans.
There is another curious, but perhaps non-significant coincidence about Holy Cross Hospital, since the AMI intern, Jordan Arizmendi, who was initially under suspicion for his "strange" e-mail of farewell to the staff at AMI, developed pneumonia in October and was hospitalized at Holy Cross Hospital. The hospital is in Fort Lauderdale, Southeast Broward Country, (where Arizmendis parents were said to live) whereas Delray is in Eastern Palm Beach County, and there are at least a few other hospitals I can think of closer to Delray. OTOH, Holy Cross is a well-known medical center in South Florida.
Arizmendi was originally thought to be Middle Eastern, but was later reported to be a third-generation US citizen of Spanish-Basque descent. The AP also reported that his mother is Jewish. Thats about all that was ever reported about him, except that he was interviewing for a post-graduate internship with Disney, and was then (10/01) a senior at Florida Atlantic University. His father, Hank Arizmendi, said that he his internship at AMI ended in mid-August, but that he had returned to AMI in mid-September to visit friends. He also apparently attended the American School in Japan, since hes listed on the website as a 96 alumnus with an e-mail address at FAU.
I also remember a local South Florida TV segment about a female employee at a private medical clinic in Miami, who was fired for going public with the fact that Atta and company visited the center and used their computers. Never heard any more on that.