. >>> ed sorenson is a potential diver to go to thailand if needed. e rescue & recovery coordinator. he joins us from florida's blue springs state park. ed, thanks for joining us. what are the risks and the dangers to the boys and the divers? >> well, there is just so many risks in a rescue operation such as this one. obviously the zero vis is one of the biggest. the extreme high flow. in this particular case, the flow seems to be dropping down li bit. should help t but the narrow restrictions are going to be one of the biggest ones. stress is one thing that they really need to keep in mind. these boys aren't used to being in the water. they don't even know how to swim. they haven't had scuba apparatus on, and then to have to get separated from the rescuer and then get stuck through a small hole, it's going to be stressful for them. >> what are you focusing on? as a layperson, we're just saying, please, hurry, get them out as quickly as they can. when you hear an operation is underway, what are you focusing on and saying, oh, this is going well, or, ho