no one is going to walk into a cockpit with 100 landings under their belt. they have to get experience. reporter: re tired united captain ross aimer teaches new pilot if the approach isn t perfect, abort the landing attempt. decisive. be decisive. if you think you re too high or too slow, do something immediately. reporter: the president and ceo of asiana arrived to a media frenzy in san francisco, promising full cooperation with the investigation. meanwhile the only crew memberer to speak to korean media, flight attendant, le, worked frantically to free passengers and other crew members trapped inside the plane. translator: actually i was not thinking but acts. as soon as i heard emergency escape i conducted the evacuation. reporter: two teenage girls died, pun possibly hit by an arriving emergency vehicle pfr of the more than 180 injured, 26 remain hospitalized, six in critical condition including one