Government auditors estimate that “rework” costs for the first lots of F-35 aircraft will total nearly $1 billion, owing to the Pentagon’s strategy of developing and buying the single-engine, stealthy fighter at the same time. These costs are referred to by program officials as “concurrency,” because testing activities are taking place concurrent to production of the early lots of aircraft by prime contractor Lockheed Martin. The Pentagon embraced this strategy when awarding the company ...


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