box, itself. i know that when they recover one of the black boxes from the air france search and put it on the bench and cleaned it up and put a new battery in it and tested it, it didn't function at the frequency they were expecting. and it also didn't give the correct voltage that they were expecting which indicated that either the box had suffered some sort of damage -- i'm sorry, the beacon had suffered damage or that it was manufactured incorrectly or had some defect inside. so it could be any number of explanations. including maybe that the water environment is changing the signal, but i think it's probably more likely it's coming from the box at that frequency. but the manufacturers still seem to think that it's coming from their beacon. so we're going to go with that. >> we heard in the last hour, colleen, from one of the new zealand air commanders there who's been involved the surface search is now about the size of west virginia. looking for debris that may be floating on the surface. but the search underwater based on those four or five pings is a