Also, wonder what kind of building it was -- sounds like office space--why would a food mixer be used, normally, in such a space?
Must be the crazed right-wing wackos associated with a terrorist group that advocated the use of biological warfare against the USA, and showed peculiar interest in cropdusters. </ sarcasm>
They were mixing up the anthrax to put in the cards. It's a dual business!
Seriously, I can't think of anything a bunch of guys with a hole in the wall business would need with a $100,000 food processor that would be legitimate.