once again joining us, cnn aviation analyst, peter goelz and chris van alt.hose families, peters, they see this, the fact that these transmitters didn't work, all four of them didn't work for whatever reason has potential evidence that the plane may have actually landed on land someplace and their loved ones are still alive. >> that's exactly right. they think against all reasonableness of, you know, that these are the facts. maybe, just maybe the plane landed. and if that's the case, any kind of explanation says the antenna might have broken off or might have dropped too quickly. we've got to find the wreckage. >> let me bring in chris van alt into this. you helped develop the technology that was successful in finding air france h447, the remus. >> well, it's always best to get the best equipment on the scene as quickly as you can. but i would defer to the people who were on site. they know what is going on there. certainly the systems that we have in there, their proven capabilities during the flight 447 search would substantiate that they would be a great