# Aegis Ballistic Weapon System Support

**R-2A activity** of project MX09 — Aegis BMD Development Support  
**Program element:** 0603892C — AEGIS BMD  
**Component:** Defense-Wide · **Budget Activity:** 4  
**Vintage:** President's Budget PB2027  
**Canonical URL:** https://hitchintel.com/programs/0603892C/MX09/a1  
**Parent:** https://hitchintel.com/programs/0603892C/MX09

## Summary

This activity requests $55.4M in FY2027, 32% of project MX09, up 414% 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.** - Develop and deliver updated threat models in support of the threat adaptation integration with in-service baselines. - Conduct studies and concepts supporting development based on real-world lessons learned. - Execute backfit capability deliveries to in-service Aegis baselines to enhance operational performance and extend system lifecycle. - Provides new capability development and threat adaptation data for in-service baselines and increased operation and sustainment of land-based test sites due to increase of Aegis Development and lab usage. - Provide real-world operational support and ship software upgrades for BMD 4.1 and BMD 5.1. - Conduct analysis of real-world operational data from the warfighter to assess future system improvements and emergent maintenance corrections required.

**FY2026 to FY2027 change.** Increase from FY 2026 to FY 2027 provides: - Addition of a new capability development for in-service ships, including real-world lessons learned; real-world combat operational support through post-event analysis, system-level testing, maintenance builds, and post-certification threat adaptation data updates. - Ship software upgrades for BMD 4.1 and BMD 5.1 (10 BMD 4.1.2 Guided Missile Destroyers (DDGs), 11 BMD 4.1.3 DDGs, 18 BMD 5.1.3 DDGs, 8 BMD 5.1.4 DDGs, 1 BMD 5.1.5 DDG). - Increased operation and sustainment of land-based test sites due to increase of Aegis development and lab usage.

## Before the request year

**FY2026 plans — current year.** - Conduct Modeling and Simulation (M&S) runs supporting baseline capability development. - Conduct integration, verification, and Hardware-in-the-Loop test events at test sites.

## Funding

| Fiscal Year | Estimate Type | Amount ($M) |
|---|---|---|
| FY2025 | Actual | 60.7 |
| FY2026 | Enacted | 10.8 |
| FY2027 | Request | 55.4 |

> 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 MX09

- Program Operations — FY2027 74.6
- Fleet Integration — FY2027 26.7
- Infrastructure Upgrades — FY2027 18.6

## Source & machine access

- **Source:** FY2027 Office of the Secretary of Defense RDT&E Budget Justification, Exhibit R-2A, PE 0603892C project MX09 (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.*