they're now working off satellite images four days old that they've been analyzing. conditions are very rough. it's going to take time to get there. so there are a lot of what ifs going on here. this is the best bet and it's what the australian prime minister said to his own parliament is the best lead they've had so far. richard quest, mary, thank you for helping us through part of it. we'll fill in the blanks as we got new information. >> all right. now let's bring in john blackslan. he is a senior fellow of australian university. we're hoping he can shed light on how the pieces of the search came together. good to have with you us, chris. afterously our chris was talking about the fact this information three or four days old. they're looking at the australian authorities. you are encouraged by this information? >> yes. i'm afraid i'm a little bit pessimistic. when you look at the photographs that we've seen, not only are they four days old, but the object was actually partially submerged and about the length