benjamin leavy was one of the patients taken to sf general. he's a 39-year-old who happened to be sitting in an exit row when the plane crashed on the tarmac and amazingly, he ozable to walk away from the burning plane. he said he can't believe more people weren't killed. >> trying not to scream, push each other. people were so confused and traumatized. you know, no code from the captain, press for emergency landing or engine failure. nothing. >> hospital officials say the patients injuries ranged from burns and broken bone to head and spinal cord injuries. this morning, still conflicting information about the two victims killed in the plane crash. the san mateo county coroner said one victim was just 16 years old but that the other was an adult. at a news conference, the press of asiana airlines reportedly told the media one of the dead was born in 1996, the other born in 1997. do the math, that means both of them are teenagers. that information coming from an nbc news translator who listened to today's briefing. what we know is both victims

but despite the chaos, passengers were able to get out and passenger benjamin leavy told reporters heinks he knows why. >> what saved so many lives i think today is the fact that they were no fire immediately. >> reporter: experts say that's right. >> you had a situation where we had flame retardant materials in the seats and in the cabin and that contributed to the fact that a be cabin didn't -- that the cabin didn't light off as quickly. >> reporter: kevin hyatt says as chilling as it may look, the seats actually also saved lives. >> now, with the new seats, and the new fastners and stronger floors in the aircraft, those seats now stay in place. >> now take the time to check the safety card in front of you excellent. >> reporter: and believe it or not he says new in-flight training videos make a big difference, too. >> they are a lot more interesting as i would say and the passenger seems to hold an interest in watching it where as before most of us had the newspaper in front of our face and we didn't pay much attention. >> reporter: he says the new construction standards were key t