Down Madly News Today

Followed played out in front of so many cameras. possible by what the bomber wanted. videos of people crossing the finish line and then a horrific crime. >> where are we supposed to go? >> theyre taking down madly. all the stuff from the marathon. [sirens] >> shepard: cassidy who took this does video for a living. shes with us, and bruce as well, a witness who was there at the time it hand. cassityie, you were taking video of a friend? >> one of my coworkers was about to finish the race but he a...