Comment: Doesn't take a lot of

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In reply to comment: I haven't jumped to any conclusions (see in situ)

Doesn't take a lot of

Doesn't take a lot of planning to put a bomb in a bag and walk into a crowded place and drop it off. If they had planned it well you'd think they would have worn disguises or something. Or even better, bomb an event that isn't in their backyard where there are a gazillion people who know their faces. I think it's pretty clear at this point that these guys weren't rocket scientists and this wasn't planned very well at all.