Lockheed Martin and Raytheon will split about $1.8 billion to mature their proposed designs and begin prototyping for the Air Force's next-generation, air-launched nuclear cruise missile over nearly five years, the Air Force announced Wednesday. Each company received approximately $900 million to proceed to the technology-maturation and risk-reduction phase of the Long-Range Standoff Weapon competition to replace the 1980s-era AGM-86B Air-Launched Cruise Missile, Air Force spokeswoman Capt. Emily Grabowski said in an Aug. 23 statement. "The aging ALCM will continue...