sky. >> when we see the video it's remarkable that only 28 people were injured. when we're looking at what you're just showing. the condition of the cars on their side that there were only 28 people injured. at this point we know people are fighting for their lives but no one has died. what is it that kept passengers safe when you look at a fire ball like that? >> reporter: unfortunately, it's something this community has learned from experience. there's been terrible derailments in the past ten years or so. there's a new technology being used. it's collision energy management technology. that prevents the train cars from crumpling. more people will live. because the cars remained in tact and tipped over many many more survivors. this could have been a lot