When bombs exploded at the Boston Marathon on Monday, my Facebook feed was immediately filled with urgent messages. I watched as my friends and family implored their friends and family in Boston to check in, and lamented the fact that nobody could seem to get a solid cell phone connection. Calls were made, but they got dropped. More often, they were never connected to begin with. There was even a rumor circulating that all cell phone service to the city had been switched off at the request of law enforcement.

That rumor turns out to not be true. But it is a fact that, whenever disaster strikes, it becomes difficult to reach the people you care about. Right at the moment when you really need to hear a familiar voice, you often can't. So what gives?

To find out why it's frequently so difficult to successfully place a call during emergencies, I spoke with Brough Turner, an entrepreneur, engineer, and writer who has been been working with phone systems (both wired and wireless) for 25 years. Turner helped me understand how the behind-the-scenes infrastructure of cell phones works, and why that infrastructure gets bogged down when lots of people are suddenly trying to make calls all at once from a single place. He says there are some things that can be done to fix this issue, but, ultimately, it's more complicated than just asking what the technology can and cannot do. In some ways, service failures like this are a price we pay for having a choice and not being subject to a total monopoly.

When bombs explode in a crowded city street, individuals and governments naturally ask themselves, "Could we have prevented this if we had been paying better attention to people and things that were out of place?" Trouble is, that question leads to a whole cascade of other questions — covering everything from personal privacy to racism.

M. Neelika Jayawardane is associate professor of English at SUNY-Oswego. She's giving a talk this afternoon on "If you see something, say something" and other campaigns aimed at getting average people involved in public security. I happened to be here on campus for a separate speaking engagement and thought this was something that BoingBoing readers would be interested in "sitting in" on, given the recent tragedy in Boston.

I'll be liveblogging this, updating regularly with key points and ideas from Jayawardane's talk. It's worth noting that her perspective is not the only way to think about these issues. I'm posting this in hopes that it will present some interesting information and spark good conversations. If you're interested in engaging with Jayawardane afterwards, she said that you can reach her via Twitter. In the meantime, I'm looking forward to seeing what she has to say — and what you all have to say about that.