i just listened to the boston ems radio traffic from the marathon bombing published on boston.com this afternoon. i try not to replay these horrifying moments from the city i have called home for the last 12 years, but i am continually amazed by the first responders of that day. it takes a certain kind of human being to remain calm in that kind of chaos, i could never ever do something that courageous. they saved lives, a lot of them, by their quick actions. talk about being thankful for these people!