Additionally, the FBI will be releasing more evidence to buttress their claims.
Personally, I’m not as concerned about the timeline to mail the letter from New Jersey as the complete lack of evidence of weaponization equipment or experience.
It’s clear that he could lyophilize (freeze dry) his anthrax, but then it would have to be milled in some manner to a very small particle size, and then coated with a substance that gives it a static charge so that it would aerosolize well, and this was not something done at the lab.