Handout photo shows NTSB investigator Panagiotou examining battery cell from the JAL B-787 at the NTSB labs in Washington

 
Handout photo shows NTSB investigator Panagiotou examining battery cell from the JAL B-787 at the NTSB labs in Washington
National Transportation Safety Board (NTSB) investigator Joseph Panagiotou examines a battery cell from the battery involved in the JAL Boeing 787 fire incident in Boston, in the NTSB labs in Washington in this handout picture provided by the NTSB on January 29, 2013. The NTSB on Tuesday said it was continuing to investigate a January 7 battery fire on a Boeing Co 787 Dreamliner at Boston airport, and had shifted into a more detailed, microscopic examination of the damaged battery. REUTERS/NTSB/Handout