situation like this with so many hurt. mark seigel is here to answer just that. we heard reports of broken bones and loss of consciousness and lacerations. how do you begin the triage? >> you have to start with what you think are the most life threatening injuries. when you heard abdominal pain you worry one of the major organs were hit. you geoff them intravenous lines to replace all blood that may have been lost. you get them right to the hospital for surgery if needed. you think about head injuries. p people flying around the cars like this you could end up with blood in the head you could end up with head trauma or spinal injuries. on the scene emergency workers will take people who they think may have damaged their spine and literally tape them down to hard boards so they can't move and get them right to the hospital. everybody at a scene like this