R-2A Activity · President's Budget PB2027

Software

Activity a3·Project 655238 — GROUND BASED STRATEGIC DETERRENT (GBSD)·PE 0605238F·U.S. Air Force
FY2027 Request
$292.7M
▲ 84% vs FY2026
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This activity requests $292.7M in FY2027, 6.5% of project 655238, up 84% on FY2026. The R-2A exhibit describes it across FY2026–FY2027, including what the FY2027 money is planned to buy.

FY2027 Request
$292.7M
▲ 84% vs FY2026
FY2026 Enacted
$158.8M
▲ 11% vs FY2025
FY2025 Actual
$143.5M
Prior year
Planned work

What the FY2027 request buys

Verbatim from the R-2A exhibit for project 655238 of PE 0605238F. This is the budget justification's own description of work that has not happened yet — the one thing no other level of the budget carries.

FY2027 planned work

Continue to mature the weapon system's software technology, ensuring robust cybersecurity, and developing comprehensive software sustainment strategies. Continue to refine requirements and modular architectures through rigorous testing and analysis, as well as maturing weapon system software, integration, and lifecycle management. Continue to expand data ingestion capabilities to accommodate flight test data and support model-based engineering approaches. Continue to increase government support to sustain the hardware and software technical baseline. Continue to develop and mature sustainment strategies for digital, software, and hardware components. Continue to assess software fielding requirements and timelines, in addition to software infrastructure needs for the transition from MM III to Sentinel. Continue to assess the feasibility of leveraging existing government software resources and partnerships to maintain control of the technical baseline.

FY2026 to FY2027 change

Funding increased due to the risk reduction / parallel path efforts identified through the program restructure activities, TMRR efforts to achieve MS-B, and the EMD prime contract schedule incentive fee identified in the "Omni-Mod” contract framework.

Before the request year

FY2026: the year under way

Prior-year accomplishments and current-year plans from the same exhibit. Context for the FY2027 plan, not a series — an activity partitions its project exactly in the request year, but can under-cover it in earlier years.

FY2026 plans — current year

Mature the weapon system's software technology, ensuring robust cybersecurity, and developing comprehensive software sustainment strategies. Refine requirements and modular architectures through rigorous testing and analysis, as well as maturing weapon system software, integration, and lifecycle management. Expand data ingestion capabilities to accommodate flight test data and support model-based engineering approaches. Increase government support to sustain the hardware and software technical baseline. Develop and mature sustainment strategies for digital, software, and hardware components. Assess software fielding requirements and timelines, in addition to software infrastructure needs for the transition from MM III to Sentinel. Assess the feasibility of leveraging existing government software resources and partnerships to maintain control of the technical baseline.

Money

Three years, and no five-year plan

An R-2A activity publishes the prior year, the current year and the budget year. The FYDP outyears exist at project and program-element level and are deliberately absent here rather than inferred. Estimate types are colored and never summed into one figure.

501001502002500143.5FY25ACTUAL158.8FY26ENACTED292.7FY27REQUEST
Actual Enacted Request
Fiscal YearEstimate TypeAmount ($M)
FY2025Actual143.5
FY2026Enacted158.8
FY2027Request292.7

This activity is 6.5% of project 655238's FY2027 request and 6.5% of PE 0605238F's. In the request year the activities under a project sum to it exactly; in the current year they under-cover it in about 9% of cases, so an activity's delta can legitimately exceed its parent's and the two must not be compared row to row.

Where this sits

7 activities in project 655238

Every R-2A line of this project, largest FY2027 request first. Linked where the activity has enough of its own narrative to carry a page; the rest are shown in full on the program-element page.

Source
FY2027 Department of the Air Force RDT&E Budget Justification · Exhibit R-2A · PE 0605238F, project 655238 (President's Budget PB2027). Congressional marks are recorded on the program element, never on an activity.
Machine access
Markdown twin /programs/0605238F/655238/a3.md · MCP mcp.hitchintel.combudget_get_activity