Science Applications International Corporation $(SAIC)$ has secured a $55 million contract from the Space Development Agency for the Proliferated Warfighter Space Architecture (PWSA) Tranche 3 Program Integration. This five-year contract, starting May 1, 2025, aims to enhance warfighter lethality and decision-making by integrating multi-vendor space vehicles for the Transport, Tracking, and Custody Layers. SAIC will provide comprehensive systems engineering support to ensure seamless mission integration of space, ground, and user segments, addressing critical Department of Defense capability gaps. The initiative underscores SAIC's expertise in mission integration and digital engineering, contributing to next-generation space capabilities and global missile defense.