I think only Anthony Zappa knows the answers to that.

Investigators have no doubt that the pipe bombs were planted, that these events were caused, by the same person. The letters speak of 'I,' but we haven't eliminated the possibility that there was more than one person.

But there's always a concern for the person's safety.

I'm still looking for answers, ... and still wondering why.

I was interested by the answers to the one-word descriptions. It's a classic case of a well-known incumbent and a political newcomer ... it's interesting how well-defined that kind of dynamic is.

What he's doing is elevating the perspective of the leadership of this department and asking: 'I don't know the answers to these questions, but they're on my mind and I want them on your mind too.'