The Defense Department has re-opened a competitive project in its expanding efforts to develop an arsenal of hypersonic weapons, pulling Raytheon back into a program launched in 2015 to go head-to-head against Lockheed Martin in an effort to develop a tactical-range, hypersonic boost-glide weapon that could be air-launched -- and possibly also fired from a ship. On Feb. 25, the Defense Advanced Research Projects Agency awarded Raytheon Missile Systems a $63.3 million contract for a second phase of the Tactical...