US Awards $1.75 Billion for 36 Missile-Warning Satellites Under Golden Dome
The U.S. Space Development Agency (SDA) has awarded two agreements worth roughly $1.75 billion combined to field missile-warning and tracking satellites in support of the country’s Golden Dome missile-defense initiative. Announced on 14 July 2026, the deals task L3Harris Technologies and Sierra Space with delivering a total of 36 space vehicles, expected to be available for launch by the end of 2028.
Details of the award
The 36 satellites, spread across four orbital planes, make up the Accelerated Missile Defense Tranche 3 (AMDT3): 18 missile-warning and tracking variants and 18 missile-defense variants. L3Harris will provide 18 hypersonic and ballistic tracking space-sensor missile-defense variants across two orbital planes, valued at about $955 million. Sierra Space will deliver 18 missile-warning and tracking variants across two orbital planes, worth about $798 million. Together they will form the Tracking Layer of Tranche 3 of the Proliferated Warfighter Space Architecture (PWSA).
The Golden Dome context
Golden Dome is the name for the United States’ multi-layered missile-defense vision, aiming to detect and track ballistic, hypersonic and cruise-missile threats early from space. Persistent tracking from orbit is particularly valuable against low-flying, maneuvering hypersonic weapons that can slip below the horizon limits of ground radars. The SDA’s approach of proliferating many small satellites in low Earth orbit seeks to build a more resilient, uninterrupted tracking mesh than a handful of large, costly platforms.
Why it matters
The spread of hypersonic weapons has called into question the adequacy of existing early-warning infrastructure. Space-based tracking layers are seen as a critical link that extends reaction time against such threats. Ordering 36 satellites at once shows the U.S. scaling this architecture with a serial-production, rapid-deployment logic, while the multi-vendor model (L3Harris and Sierra Space) adds competition and supply-chain resilience.
Strategic significance
Space is moving steadily to the center of missile defense. For NATO and allies, sharing early-warning data is the foundation of integrated air and missile defense. As nations pursue layered architectures of their own, major powers’ investment in space-based tracking sets reference standards for future threat detection.
Sources
- U.S. Space Development Agency (SDA) contract announcement, 14 July 2026.
- Air Force Times / Space Force news desk — values, satellite counts and vendor breakdown.
Representative image (U.S. SBIRS missile-warning satellite, public domain); not the specific satellites in this report.
