Each L3 component is scored 1–5 on four dimensions by reviewing supplier data, lead-time records, qualification requirements, and trade/export controls.

Ordinal scores (1–5) are mapped to a 0–100 scale, then weighted:

84 L3 components are scored individually from supplier-level research. L2 modules and L1 domains are computed as the average of their children's scores (28 L2 from L3, 7 L1 from L2).

Each node carries a confidence tier (high / medium / low) reflecting evidence quality. Confidence is metadata only—it does not modify the BTI score. Scores reflect a point-in-time assessment (Feb 2025) based on public sources, trade data, and procurement records.

v1–v2 derived BTI from proxy signals (capacity utilization, lead-time estimates, substitution heuristics) with confidence penalties. v3 replaces proxies with direct ordinal assessment per dimension, scored from per-component research files with supplier-level justifications.

Each bubble is a component in the defense industrial base (engines, sensors, batteries, etc.). They're grouped into 7 domains like Propulsion, Energy Storage, and Secure Comms.

• Bigger + redder = higher bottleneck pressure (supply-chain risk)
• Smaller + muted = lower pressure, less constrained
• Diamonds = supplier companies (toggle on with the switch)

1. Click a domain label (like "Propulsion") to expand it and see all its components
2. Click any node to see its risk profile, key blockers, and linked suppliers
3. Use the filters at the top to narrow by domain, confidence, or pressure level
4. Try "Top Bottlenecks" to instantly see the 10 most constrained components