would you recommend that as well? >> well, if we have the resources. but as an engineer, i would say, if you have this datum from a couple of years ago where the air france pinger changed frequencies at great depth, it's likely this one did too. and with all the errors, it's very reasonable the pinger would change frequency like this. but with that said, if we're right at the limit of the batteries, 32 days, and you've heard nothing, maybe that last little bit you heard was the last little bit that this device could produce at this depth. and also, along with the errors introduced by the different layers in the ocean that form with different temperatures and salinity. and this is all -- we're all speculating. but it is possible that it's -- that that's the last you're going to hear from it. >> michael kay, remember last night, we were talking to, you know, one of the guys out on on the "uss blue ridge," and you were talking about