the families feel like they're not getting the information they need. what is a primary complaint on the part of the families with this investigation? >> reporter: that they're not getting enough data from the investigators. they would like to know the exact routing of the aircraft took when it turned back, did it turn left or right, what was in the cargo hold, they want to be able to listen to the air traffic controller's conversation with the cockpit, with the first officer, with the captain. they want to hear that. all of those things they've been told, that's subject to investigation. that won't be disclosed by the investigators. they've been told a route that the plane took. that doesn't satisfy them. they don't believe or they're up sure whether the investigators believe or can trust the data which led to this south indian ocean off the coast of australia. of course, that is leading to conspiracy theories. one theory is did the plane get hijacked, did it land in diego garcia. was it shot down by the military