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>> the rov can stay submerged for days. >> reporter: and the hope is with these capabilities, the rov will finally manage to bring some answers to the surface. so, jim, i talked to some of the industry experts including some folks that worked in the air france flight 447 search team and one of the things they told me that these rovs can do is they can give you a map of the ocean floor of the debris field. so, with these rovs theyre able to fly them around different -- different pieces of debris ...