aviation department mary shafo, great to have your expertise on this. when you look at how the authorities have been handling this so far, in terms of their interactions with the families what they have and what they have not said as well. do you see this announcement or this comment that it's at the bottom of the ocean, perhaps coming from some sort of data that we haven't yet heard about? >> i certainly hope so. because to deliver that information to the families and i've worked with hundreds of families over the years, they hang on every word. and it would have been the most devastating news possible because they all hang on to hope. there are many who will want to hope and expect that their families are in life rafts, that they managed to float in the flotation devices and for them to hear this news from authorities, the authorities must have the information and the airline must have additional information, additional radar coordinates, quite possibly satellite imaging.