conversation going on amongst all the countries and entities involved in this search for how they go forward if bluefin doesn't come up with anything. it is clearly almost all the way through this initial, most hoped for search area where they thought they'd hit something positive with regard to 370. and going forward what they are looking at is several months out and possibly bringing in other types of resources, other types of vehicles, autonomous or towed vehicles, that might be able to take either a bigger picture of the ocean floor or operate on a more constant basis over a much larger stretch of the ocean out here. don? >> miguelmore kwez, thank you very much. richard quest now in kuala lumpur, where many of the family members have gathered. what are the questions some of the families have been asking and not getting answers to? >> reporter: well, i have them here for you.