as we cover the breaking news on missing flight 370 and the possible debris found off the coast of australia, we want to now turn to denver, colorado where we are joined by senior air safety investigator with the national transportation safety board greg feith. you have been on this story with us from the very beginning and it looks like we are zoned in on an area that you brought up to us very early on here. the latest information about this debris field that is being found, the size and scope of the pieces that are being seen on satellite images but also the fact that those images are four days old and those pieces could be well under water and we are talking about water that is two and a half miles deep. please pare down what hope we can have here at confirming anything about what might have been seen. >> one of the big keys in all of this is that when the search effort up north really failed to turn up any kind of evidence,