saying and regroup. >> i imagine, at the same time, reassure the families they are not giving up. greg, i wonder if i could bring you in here. you made an interesting point that they may be refining the area of the pings which may be a reason then for them to reassess and start scanning the ocean floor somewhere else? >> yeah. i think, you know, this whole search is kind of a step function where you got, first, aircraft looking for floating debris and the debris is only going to float so long and disbursed over a wider area. that part of it is, i'm feeling a little -- a little like that, that we may be coming to the end of that. the second way to do it, of course, is with a ship on the surface that can send sonar beams down and pick up features. then the lower you get with things like blue-fin and i said there is other vehicles out there that should be deployed, i