Injuries may result in 'major trauma' in aftermath of Oklahoma tornado- Senior Medical Correspondent Elizabeth Cohen reports

CNN has the latest developments on the deadly tornado that struck an area outside Oklahoma City yesterday. Senior Medical Correspondent Elizabeth Cohen explains the minor and major injuries people may be facing in the wake of the devastation. "About half of the injuries are going to be from flying debris," she says, "especially wood." Then "much of the rest would be people who were actually hit by the tornado, where the tornado actually lifted them up, dropped them down."