the reality is if they said we don't think this is it, they were obligated to search. they've done it. it's not there. we're in this for the long haul. >> now, they're suggesting maybe those pings came from the vessel that was searching and it was emitting some song and that's where it was coming from. you would have thought technical experts could determine that. even at the time, i remember reporting skeptics saying these may not be from the black boxes, it may be from another vessel or that vessel itself conducting the search. >> that's true. people were criticizing at the time the chinese ping locator and saying they're probably hearing their own boat. you would think, these are the most professional searchers available, they wouldn't know better than this? this sounds incredible to me they didn't consider or realize the possibility at the time they're listening to their own boat or a nearby boat.