WASHINGTON (Reuters) - Lockheed Martin Corp
Hewson said the F-35 fighter uses similar lithium-ion batteries as those being investigated on Boeing Co's
She said investigators were still trying to determine what caused a problem that prompted the Pentagon to ground the U.S. Marine Corps variant of the F-35 last week.
(Reporting By Andrea Shalal-Esa; Editing by Maureen Bavdek)
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