million flights. veteran aviation safety expert john cox. what s significant about that is that we re improving by 50% over last year, which was the aviation s safest year previously. reporter: why the improvement? pilots have never been better trained. computerized cockpits monitor every aspect of flight. alert systems warn of a potential mid-air crash or mountain ahead. hd simulators for pilots and air traffic controllers train them to handle emergencies before they face a real one. debbie herzman is chairman of ntsb. we ve learned from accidents, plowed those lessons back, in they ve been embraced and we re not seeing repeats of those same accidents. reporter: experts say two accidents in which human failure was at least partly to blame underscore that remains the biggest threat to safety. air france 447 crashed into the
you are looking at live pictures from fort bragg, north carolina. and the president is expected to be introduced by the first lady michelle obama. and jay carney just told reporters on air force one that the speech will focus on the extraordinary sacrifice of the men and women in uniform, and we will bring you live coverage ahead on msnbc. four little letters. that is what killed her. i sent one stupid meaningless text, lol, and killed a man. that is the spot emphasizing the distracted drivers. and this is a growing ing epid that the ban by the ntsb inspired to make a ban. joining me is the chair debbie