[Mamzelle]

We'd need to know the timing of the bomb sniffing dogs. Are there any pix anywhere of the dogs? Were there any dogs at all?

What if there weren't any? That bomb might have sat there all day. The package might have been dropped off the night before. Why would the bomber stand around? Why not drop it and leave?

[potlatch]

I know they were used AFTER the attacks and did see them ‘going along buildings’ on TV yesterday.

http://news.providencejournal.com/breaking-news/2013/04/ri-state-police-explosive-sniffing-dogs-assisting-investigation-in-boston.html