surface. four hours to download and analyze the information. it's going to go over an area of 5 kilometers by 8 kilometers and that's about 40 square miles. first that's what it is going to do. and then it says it can map the sea floor using 3-d technology. and he warned us, he warned everyone, he said -- he's managing expectations here. he said this may not result in finding the wreckage but it is the best option yet. also of import here, "ocean shield," according to angus houston, detected an oil slick. they collected two liters of that oil. it's about 5500 meters downwind of where they heard those pingers, the pinger detections or the audio detech text that they heard.