The Air Force wants to start work this year to put a hypersonic, conventional strike weapon on fighter and bomber aircraft, according to a July 21 Federal Business Opportunities notice. The service plans to award a contract to one of five companies in the first quarter of fiscal year 2018. Boeing, Lockheed Martin, Northrop Grumman, Raytheon and Orbital ATK are the only companies that could meet the Air Force's needs in a reasonable amount of time, the FBO notice states...