# Digital Infrastructure (DI)

**R-2A activity** of project 673503 — Test and Evaluation (T&E)  
**Program element:** 0604840F — F-35 C2D2  
**Component:** U.S. Air Force · **Budget Activity:** 7  
**Vintage:** President's Budget PB2027  
**Canonical URL:** https://hitchintel.com/programs/0604840F/673503/a4  
**Parent:** https://hitchintel.com/programs/0604840F/673503

## Summary

This activity requests $21.5M in FY2027, 7.5% of project 673503, up 208% on FY2026. The R-2A exhibit describes it across FY2026–FY2027, including what the FY2027 money is planned to buy.

## What the FY2027 request buys

**FY2027 planned work.** Continue Development of Digital Infrastructure (DI) capabilities, accreditation for DT infrastructure used for performance testing, and associated efforts that enable development and test ofF-35 Block 4 Air System Capabilities. DI efforts will be made to both DoD Organic Infrastructure such as integrated battlespace testing improvements to the anechoic chamber and associated labs as well as industry laboratory infrastructure. Additional scope includes the development and integration of USG Organic Software Centers at various DoD installations. Increased scope includes vendor infrastructure improvement and modernization within LM and supplier labs needed for Block 4 air system capability development. LM DI efforts include updates to simulation software, improvements to stimulation labs, test equipment procurement, and engineering and test operations in support of EW, radar, communications, and weapon capabilities. Budget will also cover support for the execution of DI accreditation activities for DT needed to support the planning and reporting on the verification and validation of DI to enable the use of DI as capability verification venue.

**FY2026 to FY2027 change.** When considering the FY2027 mandatory funding in addition to discretionary funding, the funding increase from FY2026 to FY2027 is due to the procurement of hardware for the creation of new Organic Software Centers for development and test infrastructure capabilities, and the recategorization of development of simulation and stimulation equipment to be captured under Digital Infrastructure instead of individual PMOs for the purpose of commonality across Enterprise Lab and Ground Test Venues.

## Before the request year

**FY2026 plans — current year.** Continue Ground Stimulation and Simulation Infrastructure Improvements and Modifications (I&M), Modeling & Simulation (M&S) accreditation for DT infrastructure used for performance testing, and associated efforts that enable development and test of F-35 Block 4 Air System Capabilities. I&M efforts will be made to both DoD Organic Infrastructure such as integrated battlespace testing improvements to the anechoic chamber and associated labs, and Software Centers at various service member locations, as well as non-organic infrastructure within LM labs needed for Block 4 air system capability development. LM I&M efforts include updates to simulation software, improvements to stimulation labs, test equipment procurement, and engineering and test operations in support of EW, radar, communications, and weapon capabilities. Budget will also cover support for the execution of M&S accreditation activities for DT needed to support the planning and reporting on the verification and validation of M&S to enable the use of M&S as capability verification venue.

## Funding

| Fiscal Year | Estimate Type | Amount ($M) |
|---|---|---|
| FY2025 | Actual | 3.6 |
| FY2026 | Enacted | 7.0 |
| FY2027 | Request | 21.5 |

> Prior, current and budget year only — an R-2A activity carries no five-year plan. It sums exactly into its project in the request year and not necessarily in any other.

## Other activities in project 673503

- [Future Flight Test Capabilities/Investments (FI)](https://hitchintel.com/programs/0604840F/673503/a3) — FY2027 138.3
- [Development Foundation Contract (DFC) Flight Test and Tech Refresh](https://hitchintel.com/programs/0604840F/673503/a0) — FY2027 72.0
- [Developmental Test (DT)](https://hitchintel.com/programs/0604840F/673503/a1) — FY2027 38.8
- [Operational Test (OT)](https://hitchintel.com/programs/0604840F/673503/a2) — FY2027 14.1

## Source & machine access

- **Source:** FY2027 Department of the Air Force RDT&E Budget Justification, Exhibit R-2A, PE 0604840F project 673503 (PB PB2027). Narrative is the government's own text.
- **No marks, no contractors at this grain** — congressional marks land on the program element and R-3 performers on the project.
- **MCP:** `mcp.hitchintel.com` — `budget_get_activity`.

*HitchAI is an independent intelligence service, not affiliated with the U.S. Department of Defense. Budget figures are requests/estimates, not obligations.*