NTSB Investigative Hearing On Boeing 787 Battery Fire

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Deborah Hersman, chairman of the National Transportation Safety Board... News PhotoBattery,Chairperson,Engineering,Finance,Government,Manufacturing,North America,Politics,Safety,The Americas,Transportation,USA,Vertical,Washington DCPhotographer Collection: Bloomberg 2013 BloombergDeborah Hersman, chairman of the National Transportation Safety Board (NTSB), makes notes during a hearing at the NTSB in Washington, D.C., U.S., on Tuesday, April 23, 2013. Boeing Co. has begun repairs on the 787 Dreamliner to fix a battery fault that grounded the fleet for three months as it enters talks with airlines to resume deliveries and meet a full-year production target. Photographer: Jonathan Ernst/Bloomberg via Getty Images