the single bluefin-21 sonar scanner has now covered about 95% of the area the investigators have called the most likely possible resting place for the boeing triple 7. when it is done we're just learning where the next focus position may be. remember, bluefins have been on more than a dozen missions. it has yet to find anything. we have yet to see anything, not one single image from the robot sub. and flight 370 took off with 390 people on board. several satellite connections and a handful of possible sonar pings, there were no signs of the airliner. the answers will come. this is for now the longest running aviation mystery of our time. tonight, we'll look at some of the new approaches that investigators may find. first, miguel marquez in perth, australia. the bluefin has nearly completed the first phase of the entire area, focused around the