that. so much frustration and anticipation that the bluefin mission could bring an end to this mystery. aviation analyst, former pilot with british royal air force, aviation analyst mary schiavo, former inspector general, and former navy submarine officer david jordan, he is co-founder and president of the deep ocean exploration company natunautiko. >> can you imagine this search comes up empty and years later we find out what happened? >> we can. if we look back to air force 447, it took two years to find the black boxes. we're in day 45 as you pointed out. i think our expectations should be set for the long haul. if we look at the blue finer it's on its eighth mission. this is a critical phase, but i think there have been a number of critical phases given the lack of evidence we've had.