The Defense Department is preparing to solicit industry proposals for a prototype space-based interceptor, taking a concrete step toward what experts say is the most achievable slice of an otherwise costly and technically daunting vision for a space-based missile defense layer: midcourse kinetic intercept. On Nov. 20, the Space Force's Space Systems Command Program Executive Office for Space Combat Power (SSC/SCP) issued a notice announcing plans to release a request for prototype proposals on Dec. 7 for a kinetic...