debris from the plane, if it's out there and until they get that, it doesn't seem like we're going to get a lot more information from them, at least at this stage. >> joe johns, understood they are frustrated and probably warn out a bit and all they want is some solid information. you know, joe johns mentioned debris, david. listen, this so no confirmation of debris but angus houston did mention an oil slick in the area of where they heard the possible pingers and said they collected a couple of liters of it and they are analyzing it. what do you make of this, we have the inmarsat data, we have the oil slick and a possible pinger -- hearing of the pinger. what do you make of this? >> as i said earlier, these -- any one of these problems involve a lot of different clues and usually these bits of information are very different