President-elect Donald Trump's move to shake up the Joint Strike Fighter acquisition strategy by injecting a surprise hint of competition -- announcing via Twitter that he wants Boeing to propose an F-18 alternative to challenge Lockheed Martin -- could lend currency to proposals, including a recent government analysis, to reduce costs by cutting F-35 procurement. On Dec. 22, Trump tweeted: "Based on the tremendous cost and cost overruns of the Lockheed Martin F-35, I have asked Boeing to price-out a...