Space Force officials said they are refining their understanding of what it means to quickly react to threats that impact operational satellites as the service prepares for its second Tactically Responsive Space mission this summer, dubbed Victus Nox. ”In a quest to be specific about what “responsive space” means to the Space Force, Sejba said the service has identified two areas where the concept could be most helpful: characterizing threats and augmenting existing satellites and sensors with additional capabilities. Sejba said some large commercial constellations have already taken this approach, launching extra spacecraft so that if another satellite fails, they have a backup in place