making good progress, expected to arrive in the search zone, we are told by the australian defense force, either late thursday evening, or by the latest, on friday, poppy. and they made that decision to send the pinger locator out there, even if they don t have any idea if this is the correct search zone, but they re going to do the best they can. give us a sense of how challenging it is, will, because i know i had heard some fact like it can only go sort of 3 miles an hour and only cover about 150-square-mile area in about an hour s time, or in a day s time, is that correct? reporter: you re absolutely correct. in a day s time? reporter: yeah. yeah, absolutely right. you know, this is what s interesting about this technology. a lot of people are pinning so much hope on the ocean shield because it has these two high-tech tools. the underwater microphone can detect the ping from a data recorder. and it has an underwater drone that can scan the ocean floor. but as great as this
satellite imagery on sunday. the images were released earlier today. this might be the best lead to date in the search for the missing plane. the objects were spotted in a roughly 150-square-mile search area in the general vicinity where three previous sets of satellite images have also spotted debris. it also comes one day after officials say new data analysis reveals a partial ping,ing aminutes after flight 370 s last previously disclosed transmission. today, officials in malaysia remained cautiously optimistic that the new satellite imagery could mean they re closer to finding the vanished flight. it must be emphasized that we cannot tell whether the potential objects are from mh370. nevertheless, this is another new lead that will help direct the search operation. while today s search found no evidence of debris, for searchers, it was a welcome change to just be out there. search efforts were shut down on