understanding is because of the way sound can refract under water, that is why you're getting these locations. >> when you look at the graphic, i think you can see where the ship was or the pinker was -- pinger was, it doesn't mean that is where the plane was -- >> why is it spread out? because sound bounces around on the water? >> exactly, sound bounces around, and depending on where the tpl is, the sound, it depends on where they go, with the layers and the topography. >> that is why they're getting the opportunity to hear more pings -- >> it would be like standing up on the mountains in the colorado mountains, shouting, you hear the echo go out, sometime it goes over the mountains, you could be standing on the rock on the other side and not hear that