The United States is making efforts to bolster layered missile defense. The Space Force Systems Command has selected Lockheed Martin to develop capabilities supporting the Space-Based Interceptor (SBI) program.

These agreements mark progress toward fielding core elements of an integrated, layered homeland defense solution. 

The company revealed that the work will accelerate development, testing and integration of SBI (space-based interceptor) capabilities, delivering an early engagement layer that expands coverage, enhances survivability and strengthens deterrence against emerging missile threats.

Next-generation integrated air and missile defense

SBI system leverages its experience with combat-proven interceptors

Lockheed Martin’s SBI system leverages its experience with combat-proven interceptors like THAAD and PAC-3 as well as the Next Generation Interceptor, hypersonic strike systems and missile warning and tracking systems. The result is an early, additional layer to the multi-domain, layered shield that protects the homeland and critical infrastructure from evolving missile threats, according to a press release.

Reports revealed that the latest initiative from the US Space Force is part of a broader effort to create a layered defense architecture that combines capabilities across land, sea, and space to better counter evolving threats. Under this program, Lockheed Martin will focus on designing and integrating systems capable of intercepting missiles earlier in their flight, particularly during phases when they are most vulnerable.

System aims to improve detection, tracking, and engagement of advanced threats

By positioning interceptors in orbit, the system aims to improve detection, tracking, and engagement of advanced threats such as hypersonic weapons, which are difficult to counter using traditional ground- or sea-based defenses.

The development of SBIs (space-based interceptors) builds on the company’s extensive experience with existing missile defense technologies, allowing it to adapt proven systems to a space-based environment while incorporating new innovations. This effort also aligns with a larger vision of establishing a comprehensive orbital defense network, sometimes referred to as a “Golden Dome,” which would use constellations of satellites and interceptors to provide continuous global coverage.

While the concept offers significant strategic advantages, including earlier threat neutralization and enhanced deterrence, it also presents challenges such as high costs, technical complexity, and concerns over the militarization of space. Nevertheless, the program reflects a growing emphasis on space as a critical domain for national security and highlights the urgency of developing advanced defensive capabilities in response to rapidly advancing missile technologies.