equipment now, most of the time we are using auv, on the air france flight we were using auv because the topography was better for towing sonar. but auv is a carrier, also, the so sonar, the same kind of equipment. that is the only way to see something under water because you don t care about the light, if it is dark or not with the sonar. you don t need any light. and you have the swab, which could be pretty big, much bigger than the towing sonar, the auv, more power, the battery cannot give the same power than you can get from a surface ship. and that is different. erik do you think they should send down a robotic vehicle and be searching that way, as well? well, as soon as you start doing that of course everything goes really even slower.