me crash further when i find out the real truth, which we're all expecting will be that the plane has crashed. >> reporter: you know, torture going through this. i mean, when she describes in terms of talking about the search and everything being done, you can imagine how difficult it is. kyra, she has two young boys. you know how they keep your spirits up. she's doing as well as she can. she feels in terms of speaking for all the families out there, they want something to be found as soon as possible. they're very hopeful now that the search has moved underwater. >> paula, you talked with the u.s. navy's top ocean engineer. we heard from him right there saying that he's confident, but there has to be challenges also. what did he tell you? >> reporter: well, you know, he's been very blunt with me for the entire week as we've been going through this. he's happy to get the towed ping locator in the water. he has the blue fin out there. i asked him, kyra, i said, is this a shot in the dark?