Lockheed Martin will start delivering some of the dozens of parked F-35s after the Pentagon agrees to accept jets with an interim software fix that would allow them to be used for training. They won’t be combat ready until next year. Lockheed had expected to deliver between 75 and 110 F-35s this year — the last was in December — and dozens of jets worth more than $10 billion have been left in storage. Lockheed has said it expects to deliver 75-110 this year, unlocking final cash payments, with the Pentagon able to clear the backlog at a rate of 20 a month.