look for fbi agents and ntsb personnel going door-to-door looking through people s back yards for this piece, the key to the investigation of the plane. the ntsb chair, jennifer hom difficult, made it a specification point to say how lucky the people on board were at the time this happened. listen to her on that front. those watching may be curious about safety or concerned about safety. we have the safest aviation system in the world. it is incredibly safe. we are the global gold standard for safety around the world, but we have to maintain that standard. reporter: so what s going to happen in the early morning hours, the flight recorders will be sent from portland to ntsb