In this image released by the National Transportation Safety Board, NTSB Materials Engineer Matt Fox examines the casing from the battery involved in the Japan Airlines Boeing 787 fire

 

              In this image released by the National Transportation Safety Board, NTSB Materials Engineer Matt Fox examines the casing from the battery involved in the Japan Airlines Boeing 787 fire
In this image released by the National Transportation Safety Board, NTSB Materials Engineer Matt Fox examines the casing from the battery involved in the Japan Airlines Boeing 787 fire in a plane that had already landed in Boston at NTSB headquarters in Washington, Wednesday, Jan. 23, 2013. (AP Photo/NTSB)