This is my opinion,and, unless I see some powerful evidence to the contrary, I’m sticking with it:
Is that what you're trying to tell us gene?!
My own opinion starts with the flow of postal MTE (mail transport equipment, i.e. trays and sacks) through the processing systems in contaminated post offices BEFORE the attack was discovered.
It took several days for people to get sick so during that period thousands of pieces of equipment were contaminated.
One type of equipment, the "flat tray" (used for large letters and small parcels), is used in the bottom of traditional letter mail collection boxes. You drop in your letters and they fall into the tray inside. The collection employee comes around and simply swaps out the full tray with an empty one in seconds.
So, Franklin facility is contaminated, thousands of trays full of contaminated mail are moved out into their service area, an empty contaminated tray is placed in the bottom of a collection box in Princeton, the contamination is expressed out of the tray as the tray is filled, and even puffs out and contaminates the outside of the box.
That's the fundamental item the FBI bases 100% of its case on. They use that contamined piece of equipment to have Ivins running about the countryside, chasing down a sorority, and doing all this on a certain date where he is also working a couple of hours extra at night.
It is not possible to prove that a collection box within 500 miles of the Franklin facility or the DC post office was the point of mailing ~ since so many of them were "contaminated".
My conclusion is the FBI has come up with this story to cover-up the fact that postal executives actually conspired to suppress public knowledge of how widespread MTE contamination really was. That is, a felony was commited, and the FBI is flipping that into a reason why they could go after Dr. Ivins.
None of these pukes are to be trusted.