Boeing, Lockheed Martin and Raytheon Technologies are vying to supply the U.S. military’s next-generation short-range interceptor, with all three companies submitting bids, due last week, in an expected multibillion-dollar competition to design and build the follow-on to the venerable Stinger missile -- a franchise with a four-decade run. The Army plans to buy at least 10,000 missiles from the winning supplier to give ground forces a modern surface-to-air missile system to strike everything from drones to aircraft, and the potential...