I'm going to piggy-back on this about a certain way information may not add up. I live in Boston, and so do my siblings. We all worked downtown. On the day of the marathon bombing, I immediately called my sister on her cell phone to see if she was okay. Someone that was not my sister picked up, then immediatly hung up after I said who I was looking for.

I was immediately terrified. What if my sister had been hurt, dropped her phone, and it was now in the hands of an opportunistic lowlife? But no. That wasn't it at all. It was instead, that the overloaded cell network, instead of just failing to connect my call, instead, misconnected it.

That was a failure mode I had not predicted. In the end, all my people were fine. But I was shaken. And of course, many other people were not fine.