Flight Data Recorders D News Today

The flames really develop. what do investigators know about the seconds, the seconds, before the crash? i know that debra hersman, the chair of the national transportation safety board, shes walked through, but there are some specifics that you have. >> reporter: yeah. they have put out information from the flight data recorders d from the voice recorders in the cockpit to try to piece together and give us raw data about what they know about what happened seconds before that crash. they say it w...