debris field, and the satellite imagery is helpful, but i have to caution not to be too optimistic until we actually get visual confirmation. once you do, our oceanagraphers reverse plot and that will help us determine a much more specific point where this plane may have crash landed. >> commander marks, help me understand this, because i'm an idiot in science and this kind of thing. but for days now, we've been hearing about satellite data from a variety of different countries showing in one case 122 pieces of debris, whatever it may be, but multiple sightings of debris in the water. i assume those had relatively specific coordinates, and that's where the -- and that's where your efforts, the australian,