bigger or heavier because that means it's going to cost you over the long run. so it's actually not the ideal frequency for under water. here's a little piece of irony. the p-3s and p-8s that are searching for this particular aircraft are outfitted with black boxes that float. >> huh. >> why not? why not have a -- you can have a redundant set of devices that stay on the surface and then you can broadcast on an emergency frequency and you could find a site much easier than trying to, you know, get sonar equipment underwater and hydrophones to listen for a ping. >> yeah. if we can, too, guys, take a two shot. how heavy is that, les? >> it's a fairly heavy unit. >> it's a fairly big device. and you said, miles, what were you saying about in one incident that the pingers were not -- >> oh, you know, we certainly -- at this point we don't have any reason to believe the pingers