HUNTSVILLE, AL -- The Army has selected Lockheed Martin and Raytheon Technologies to develop competing prototypes of a next-generation short-range interceptor, a move that knocks Boeing from an expected multibillion-dollar competition to design and build a follow-on to the Stinger missile. Brig. Gen. Frank Lozano, program executive officer for missiles and space, said the government plans to begin discussions soon with the two vendors over the scope of work for a planned four-year contest that will culminate with a source...