experts. cnn aviation analyst, peter goelz. cnn afteruation analyst, michael kay. aviation consultant, ken christianson. geoffrey thomas, editor in chief of airlineratings.com joining us from pauaustralia. peter goelz, they're going to move this underwater search a little further north based on what, the second ping as opposed to the strongest ping? is that what they're going to do? >> that's exactly right. i think they're obligated to do that. the australians made a big deal about the pings. they've said this is the right spot, the investigators have said this is the right spot. they've got to search the area around each of the pings. >> so far, ken, the first ping, loudest ping, strongest ping has produced nothing. the assumption was if you get the ping from one of these so-called black boxes, there's going to be a lot of other wreckage nearby. if that's there, presumably other wreckage from the plane would be there but they searched