Redruth, one of the most deprived areas in Britain, has become a beacon for isolated West Country artists. And this is just the beginning, says Leckey, as he eyes other outposts in the north
to investigators. sometimes it can be the key piece of evidence that we need. reporter: on a rare tour of the national transportation safety board video lab we saw shaky raw footage from cell phones, dashboard and surveillance cams. spun into investigative gold to help prevent future accidents. home video caught the engines coming off this 707 military tanker. we can see an engine separate from the wing and fly up into the air. oh, my gosh! reporter: without the video investigators may have thought an explosion caused the crash. knowing the engines call off before the fire, helped pinpoint metal fatigue. now the ntsb is poised to make recommendations on new inspections. and it s not just in the air where video can help prevent future tragedies. investigator used images from a camera at an aquarium to show a philadelphia tourist boat was hiding in a tugboat s blind spot. he is bearing down on this thing without evening knowing it? correct. reporter: your video allowed you