landing with a boeing 777 at san francisco international airport. you're taking a look right now at newly released video from the ntsb that shows the damage inside the plane as well as investigators combing through the wreckage. just look at that debris field. we also have new exclusive video to cnn that shows just how that landing, that crash all went down and also the blaze that followed. joining me to talk about this all and the very critical investigation under way is debra hersman, the chair of the national transportation safety board, heading this investigation. thank you so much for joining me this morning. >> good morning. >> good morning. you see in some of that video we had exclusively to cnn just how the plane made that landing. yesterday you said that you had not yet pinpointed the focus of your investigation. have you narrowed it down yet this morning? >> i'll tell you, from the cockpit voice recorder and flight data recorder, we did get