# Golden Dome's orbital layer races toward an on-orbit interceptor demo
> 12 firms hold $3.2B in SBI work; a new $4.16B contract and Northrop-Apex push a 2028 integration target

**Meta:** type: event · date: 2026-06-19 · heads: 누구의 돈인가, 장기전 · 8 takes · 3 lenses · 2 regions

## Summary

The space-based-interceptor (SBI) layer of [Golden Dome](/ko/n/golden-dome-architecture-2026) is moving
from concept toward hardware. [Space Systems Command](/ko/entity/space-force) has placed 12 firms, Anduril,
Booz Allen, General Dynamics, GITAI, Lockheed Martin, Northrop Grumman, Quindar, Raytheon, Sci-Tec,
[SpaceX](/ko/entity/spacex), True Anomaly and Turion, on OTA agreements worth up to $3.2B to prototype
[orbital interceptors](/ko/entity/golden-dome-space) that would kill missiles in boost, midcourse and glide
phases. A further ~$4.16B contract and a Northrop-Apex push toward an on-orbit interceptor demo
landed in June 2026. The SBIs would be a proliferated LEO constellation cued by the
[SDA's tracking layer](/ko/n/space-force-missile-warning-budget-2026), with integration targeted for
2028. Doubts persist against the $1.2T CBO cost estimate and the unproven physics of affordable
boost-phase intercept from orbit.

## By the numbers

- 12, firms holding SBI prototype OTAs worth up to $3.2B combined.
- $4.16B, additional Golden Dome contract awarded in June 2026.
- 2028, target to integrate SBIs into the Golden Dome architecture.
- $1.2T, CBO 20-year cost estimate the program is measured against.

## Why it matters

Space-based interceptors are Golden Dome's most ambitious and least-proven element; if they work
they reshape strategic stability, if they don't they burn budget the [sensing
layer](/ko/n/space-force-missile-warning-budget-2026) needs. A proliferated armed constellation also feeds the
[counterspace](/ko/n/counterspace-asat-arms-race-2026) spiral.

## What to watch

- The first on-orbit interceptor demonstration (Northrop-Apex).
- Whether affordability/scalability tests clear the boost-phase concept.
- FY27 funding, sustained or trimmed as costs firm up.

## Regional takes (batched by bias / lens)

### unlabelled
- **US Space Force / SSC (via DefenseScoop)** (United States, en) — Official acquisition step: Space Systems Command naming 12 firms for space-based-interceptor prototype work under OTA agreements worth up to $3.2B, with integration into Golden Dome targeted for 2028 and an eventual proliferated LEO interceptor constellation.
  Source: https://defensescoop.com/2026/04/24/golden-dome-space-based-interceptor-missile-defense-contractors/
- **ClearanceJobs** (United States, en) — 
  Source: https://news.clearancejobs.com/2026/06/04/golden-dome-expands-with-4-16-billion-contract-and-new-interceptor-partnership/
- **InsideDefense** (United States, en) — 
  Source: https://insidedefense.com/insider/dod-awards-12-firms-32-billion-golden-dome-space-based-interceptors
- **GovConWire** (United States, en) — 
  Source: https://www.govconwire.com/articles/golden-dome-cost-schedule-ai-space-interceptor
- **Sirotin Intelligence** (United States, en) — 
  Source: https://www.sirotinintelligence.com/sirotin-intelligence-briefing-june-15-19-2026-golden-domes-orbital-interceptor-race-accelerates-spacex-tops-2-trillion-in-historic-debut-and-the-senate-advances-a-1-2-trillion-defense-b/
- **Wikipedia (Golden Dome)** (Global, en) — 
  Source: https://en.wikipedia.org/wiki/Golden_Dome_(missile_defense_system)

### US air/space service press
- **Air & Space Forces Magazine** (United States, en) — Details the SBI awards and the dozen vendors, Anduril, Lockheed, Northrop, Raytheon, SpaceX, True Anomaly, Turion and others, explaining the boost/midcourse/glide-phase intercept concept and the pLEO architecture the SDA's tracking layer would cue.
  > "Twelve firms share up to $3.2B to prototype space-based interceptors meant to kill missiles in boost, midcourse and glide phases."
  Source: https://www.airandspaceforces.com/space-force-reveals-space-based-interceptor-awards-golden-dome/

### defence-industry
- **Breaking Defense** (United States, en) — Frames the awards as Golden Dome's least-proven layer finally getting hardware money, against the $1.2T CBO cost estimate and persistent doubt that boost-phase intercept from orbit is affordable at scale.
  > "Golden Dome's least-proven layer, space-based interceptors, is getting hardware money against a $1.2T cost estimate."
  Source: https://breakingdefense.com/2026/04/space-force-tasks-a-dozen-companies-for-golden-dome-space-based-interceptors/

## Across the graph
- Related: [[golden-dome-architecture-2026]], [[space-force-missile-warning-budget-2026]], [[counterspace-asat-arms-race-2026]]
- Entities: Golden Dome Space, Space Force, Spacex, United States, Missile Defense Agency

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Canonical: https://rbtfl.xyz/ko/n/golden-dome-space-layer-2026