The "GOLDEN DOME Act of 2025" aims to significantly enhance the United States' missile defense capabilities against rapidly expanding and sophisticated threats from ballistic, hypersonic, cruise, and unmanned systems. It establishes a national policy to provide for the common defense, deter attacks on the homeland, and guarantee a secure second-strike capability. The bill emphasizes the critical need for a modernized and expanded missile defense system, including the Ground-based Midcourse Defense (GMD) system, and new defenses against evolving threats. A core provision requires the Secretary of Defense to develop a holistic missile defense strategy within one year, encompassing layered sensors from seafloor to space and cyberspace for all-domain awareness. This strategy also mandates an integrated, secure, and redundant command and control architecture with a clear human chain of command. To lead this effort, the bill establishes a powerful Golden Dome Direct Report Program Manager , a high-ranking military officer with extensive acquisition, contracting, and budgeting authorities. This Program Manager reports directly to the Deputy Secretary of Defense and is empowered to accelerate Golden Dome's implementation, including waiving certain Department of Defense acquisition regulations. The Act prioritizes rapid development and fielding of advanced technologies, such as non-kinetic capabilities (cyber, directed energy) and an AI-driven information fusion platform for early warning. It also focuses on space-based assets, accelerating the Space Development Agency's architecture and procuring at least 40 Hypersonic and Ballistic Tracking Space Sensor (HBTSS) space vehicles by December 2025. Further provisions accelerate Next Generation Interceptor (NGI) production at Fort Greely, Alaska, aiming for up to 80 interceptors by January 2028, and mandate the acceleration of Glide Phase Interceptor (GPI) development. It also pushes for ground mobile interceptors and resilient positioning, navigation, and timing (PNT) solutions for GPS-denied environments. The bill outlines a robust testing regime for interceptors, requiring a demanding cadence to begin within 540 days, including semiannual live-fire exercises. It authorizes the Secretary of Defense to waive legal requirements for expeditious military construction, deployment, testing, and operation of Golden Dome, with specific judicial review limitations. Additionally, the Act addresses the space industrial base by requiring agencies to maximize competition and prevent consolidation, and expands authorities for protecting U.S. assets from unmanned aircraft system incursions. Finally, the bill authorizes a substantial appropriation of over $23 billion for fiscal year 2026, allocated across various missile defense programs and initiatives.