items of interest. no debris found. object was unrelated. bluefin searched 90%. will take a long time to do the final 10% because it's deep and unmapped. we t get all that. two issues are developing that we don't understand. david, the first is for you. fatigue. i keep being told by military sources you're not paying enough attention to how hard this search is for those doing the search. not a call for sympathy but practicality. we're pushing it too hard. >> they're getting fatigue. they've been out there a long time. it's 24/7. you're limited on that ship with how many people there are. it's not like you can bring in fresh people all the time. they're probably at -- usually after a month you're ready to come in for a quick break. >> now, they are probably not exposed to all the media that's on this which is probably a good thing, but in your search for 447, even though you were given 90% chance of knowing where it was, you dealt with fatigue and it changed the dynamic and timing of the search. how so? >> we spent two months in an