Deborah Hersman of the National Transportation Safety Board speaks in front of a photograph of Asiana Flight 214, which crashed on Saturday, July 6, 2013, at San Francisco International

 

              Deborah Hersman of the National Transportation Safety Board speaks in front of a photograph of Asiana Flight 214, which crashed on Saturday, July 6, 2013, at San Francisco International
Deborah Hersman of the National Transportation Safety Board speaks in front of a photograph of Asiana Flight 214, which crashed on Saturday, July 6, 2013, at San Francisco International Airport, at a news conference in South San Francisco, Calif., Thursday, July 11, 2013. (AP Photo/Jeff Chiu)