[blackdog]

Most the hoaxes will be carried out by municipal employees terrified that monies will go away if no terrorism hits their end of the $lop trough. Look for lot's of such stuff for months to come.

[vollmond]

This could be a twist on the "divert the police" tactic. Just send baking soda to every police station in the area, and wait for it to hit the news. In the ensuing panic and loss of command and control, hit a few banks, or maybe a research facility, depending on your end goal.