The problem with the conduct of these NTSB briefings is with Deborah Hersman's retirement in the next few months. She announced it before the Asiana crash and makes you wonder if she just wants the last bit of attention before she's gone since no one knew or cared who she was before this accident. Shouldn't the lead investigator be running the show?
She has been privately lobbying for Norman Mineta's Sec DOT job, and DC wasn't impressed with her. With her handling this crash and being very "transparent" she has probably gotten enough media and face time to make an impression on Washington. There's now a good chance she'll be the next Sec DOT.