taking off from perth in search of night 370 getting an early start before the sun comes up. it takes a while to get there. they want to be there as the sun come up over the search area. they're racing to confirm also the pulse signals detected by a chinese ship. the latest and best lead that they have. but one that won't last long with the pingers, the black box dying if they're not dead already. this is a new search map. there you see it. it shows three areas that they'll be searching today. the australian government, maritime agency just releasing this today. just moments ago. as you can see, they'll be leaving from perth and then another search crew. those are the three today. and then you saw the chinese aleutian taking off. let's bring in paul ginsburg, an expert here with timothy taylor