> There is no expectation of danger while spectating at the Boston Marathon. You are in the presence of many other human beings. You are always in a present st

> There is no expectation of danger while spectating at the Boston Marathon. You are in the presence of many other human beings. You are always in a present state of danger around everyone, ever. It is naive to think you can predict the actions of others. I'm not saying be paranoid, I'm saying treat people like people and not faces in a crowd. You don't know their intentions with rare exception to those you actually know.