the data. that actually is four hours to download the data and they will have all day to look at the data while the bluefin is off on its next deployment. they have to recharge the batteries and that's what takes four hours. so this process is deliberate and time consuming. >> the air and surface search for flight 370 will be concluded within the next couple of days. now the search will happen under the water. does this mean that it is a scale-back? let's discuss, next.