# SiAW Development

**R-2A activity** of project 653133 — Stand In Attack Weapon  
**Program element:** 0207328F — Stand In Attack Weapon  
**Component:** U.S. Air Force · **Budget Activity:** 5  
**Vintage:** President's Budget PB2027  
**Canonical URL:** https://hitchintel.com/programs/0207328F/653133/a1  
**Parent:** https://hitchintel.com/programs/0207328F

## Summary

This activity requests $15.9M in FY2027, 14% of project 653133, down 93% 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 maturation of subsystems to meet requirements for a fieldable system. These activities include next higher-level assembly development, component/subsystem test efforts and maturation of anti-tamper capabilities. Conduct Integrated Test 2 (IT-2) and Production Readiness Review (PRR) in preparation for MS-C. Begin System Improvement Program (SIP) for AARGM-ER and SiAW.

**FY2026 to FY2027 change.** Funding decreased due to FY2027 expected completion of SiAW MTA effort and planned transition to MCA pathway and SiAW production.

## Before the request year

**FY2026 plans — current year.** Executed next higher-level assembly development, continued test and fielding Risk Reduction (RR) efforts, matured system security and anti-tamper capabilities and conducted Developmental Test (DT-1) for SiAW weapon system. Used the established Integrated Digital Environments (IDE) for digital engineering, configuration management, and evaluation of system performance utilizing the virtual twin and its associated modeling and simulation capabilities.

## Funding

| Fiscal Year | Estimate Type | Amount ($M) |
|---|---|---|
| FY2025 | Actual | 197.2 |
| FY2026 | Enacted | 219.5 |
| FY2027 | Request | 15.9 |

> 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 653133

- [Target/Test Assets, Testing, & Support](https://hitchintel.com/programs/0207328F/653133/a2) — FY2027 51.1
- [F-35 Integration](https://hitchintel.com/programs/0207328F/653133/a0) — FY2027 48.9

## Source & machine access

- **Source:** FY2027 Department of the Air Force RDT&E Budget Justification, Exhibit R-2A, PE 0207328F project 653133 (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.*