Thanks for asking, nobody; my daughter and her husband who live in Boston are fine.
Back in the 70's, the Russians invaded Afghanistan and set up a brutal puppet government (think, Chucky). We helped insurgents to drive them out, obviously making us friends of Afghan freedom. In the 90's Russia suppressed a liberation movement in Chechnya by leveling the capital, killing Chechens indiscriminately, and then setting up a brutal puppet government. So, 9/11 and now a Chechen bomber in Boston. And they say Americans are bad at geography.
I heard a little bit of the Fox News coverage of the bombing aftermath in Boston. They reported that it was possible that some people might want to use the situation to score political points. They even gave examples that people could raise, like, did the democratic mayor of Boston and the democratic governor of Massachusetts lift the "shelter in place" order too soon, or did the Obama government fail to protect the nation? And why weren't any drones being used?
Speaking of the nanny state (well, we weren't, but I'm sure someone on Fox is, or will be) is it a coincidence that the liberal state of Massachusetts pronounces the Massachusetts Emergency Management Agency as Meemaw?
Many analysts say that Al-Qaeda has been degraded to the point that it is hard for them to launch major attacks and that they are calling on their supporters to launch lone wolf attacks on their enemies. These attacks don't pose an existential threat to America, but they are designed to, you know, terrorize. At this time, it looks like that's what happened in Boston. Can I just say, though, "Fuck you." You're going to kill some random strangers to scare us? That's what we do. After Columbine, Aurora, Tucson and Sandy Hook, you're going to throw a pressure cooker at us and bring us to our knees? In the four months since Newtown, there have been 63 children murdered in this country and over 3500 people of all ages murdered. If you want to shock us, maybe pass gun control.