dr. michael gibson is a dr. beth israel medical center.s on call monday treating victims of the bomb blasts. his son ran in the marathon yesterday. we're also joined by boston- based reporter charles pierce. he wrote a piece yesterday. >> why don't we start with the doctor, talking about what you have seen at the deaconess, what has happened, what you understand has taken place. dr. michael gibson? >> thank you. it was a bit like a war scene, essentially. watching tv, seen the show inside combat rescue, we see a light of loss of limbs from explosive devices. it was eerily reminiscent of that. people were missing lower extremities. there were reports of a lot of shrapnel, not clear if that came from the bomb itself or from the container the bomb was in or near by debris, but most of the injuries were to the lower extremities. although, shrapnel was present everywhere. a lot of people had hearing loss from the blast as well. trauma base completely filled with patients. there were two waves read the first wave was about eight patients critica