debris field is now defined, jeff? >> well bear in mind of course what we have now is just the beginning of the data that's going to allow us to define the debris field. so you know as the day continues in indonesia, they'll be gathering more material. they'll have a sense of probably more a circular scatter pattern and then they'll do a drift analysis and i presume they've been dropping buoys and know how the water is moving through this body of water. and they'll be able to narrow down the area where presumably the black boxes will be under water. >> does a larger debris field mean one thing versus a shorter debris field? does that tell us how the crash happened? or is it more about currents that it tells us? >> it's both. listen if you have a massive depressurization at altitude or decompression that, you know, blasts the material into a wide area from altitude, then that itself is going to give you a debris field. if you have an intact airplane