Lockheed Martin says they are ready to begin thermal vacuum testing—“one of the most significant program milestones”—for the first Space-based Infrared System (SBIRS) geosynchronous orbit satellite.
United Launch Alliance’s new Vulcan Centaur rocket is slated to fly its second national security mission in February—nearly six months after its first operational launch and almost a year after it was certified to fly military payloads for the Space Force.
