of course you are safe. you are an american, and you are on vacation, and you dodged one bullet in boston.

in our extreme stupidity, we got into a war zone in nicaraga, and another in honduras. we also ended up in the middle of a civil unrest in italy, and again in france. i think all are high risk situations and sort of akin to crossing red lights in nyc, or crossing the dc beltway or playing golf in a thunderstorm.. just bad odds.