National Transportation Safety Board (NTSB) Chair Deborah Hersman, center, accompanied by John DeLisi, director of NTSB Office of Aviation Safety, left, and Dr. Joseph Kolly, right, director, NTSB Office of Research and Engineering, speaks during a news conference in Washington, Thursday, Feb. 7, 2013, to provide an update on the NTSB's investigation into the Jan. 7 fire that occurred on a Japan Airlines Boeing 787 at Logan International Airport in Boston. (AP Photo/Ann Heisenfelt)