Greg Ulmer

(AP Photo/Rick Bowmer)FILE - In this Wednesday, Sept. 2, 2015, file photo, an F-35 jet arrives at its new operational base at Hill Air Force Base, in northern Utah. Shares of Lockheed Martin fell Monday, Dec. 12, 2016, as President-elect Donald Trump tweeted that making F-35 fighter planes is too costly and that he will cut

Lockheed will not commit to paying back extra labor costs for F-35

Lockheed Martin failed to deliver parts with the correct electronic information causing $300 million in extra work.

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