The Space Force PEO Space Combat Power is conducting market research to identify Space Based Interceptor (SBI) capabilities to address the threat of attack by ballistic and hypersonic missiles. The purpose of this RFI is to identify existing space-based missile defense capabilities and strategize on an architecture of a proliferated SBI constellation capable of boost-phase, mid-course-phase, and glide-phase intercepts. • The SBI architecture elements include Space-based Interceptors, SBI Common Ground Element, and SBI Fire Control Element. • The Government is seeking industry's innovative solutions to establish a proliferated SBI constellation in a quick and efficient manner. • Solutions that leverage commercial products, processes, and services are of interest to the extent they maximize mission effectiveness and minimize cost-per-kill and time to field. • The strategy requires the U.S. industrial base to work together in developing the capability to defend the homeland, utilizing mature technologies, established production lines, and proven capabilities.