I'm speechless. Flabbergasted. I know many of the law enforcement types who were running around the city Wednesday, putting their lives on the line (so they thought) to locate and deactive these devices. The person behind this is a fool, and should be made to pay.
UPDATE: A commenter raised the issue of the bombs not looking much like bombs. I've responded there, but I want to add this article to the discussion. There were realistic-looking fake bombs found at the same time. It seems the police really didn't know what they were up against. Call me crazy, but if I were on the bomb squad, I'd treat every device as an explosive until I knew it wasn't.