the batteries certainly gave more than their legal life. supposed to be 30 days and now at day 34. so he believes it is the case of the battery finally losing strength and not a case of them being not on -- near the signal or being too far away from the signal and not picking it up very forcefully. >> mary, do you think they have enough information to put the underwater submersible in now or is it best to continue trying to get additional pings? i wonder this because i started thinking this morning does it need to be actively pinging when you go down there to locate it? >> it doesn't have to be actively pinging to locate it but the squloint task force, the invest xwaters wanted more pings to keep narrowing in the area. right now it's a pretty -- as dade just mentioned, it's a pretty wide area. you know, granted, 15, 17 kilometers is not far when you think about how big the space was that we were searching originally. but the more they can narrow it