What the FY2027 request buys
Verbatim from the R-2A exhibit for project 2573 of PE 0604840M. 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.
Efforts will include FIAB development, fidelity and capability upgrades to existing threats/sensors/weapons models, development of new threat/sensor/weapon models, and environment upgrades to enable effective verification of Block 4 capabilities. Efforts will continue toward expansion of JSE capability to F-35 Training Sites and providing a high-fidelity operational test laboratory for the F-35.
Considering FY2027 mandatory funding in addition to discretionary, the increase from FY2026 to FY2027 is to facilitate expanded JSE T&E infrastructure to accelerate test activities resulting in accelerated integration of FIAB into the JSE enabling schedule-relevant execution of OT requirements in the FIAB-JSE simulated environment as well as earlier delivery of JSE-based training capability to the warfighter and an operationally representative simulated environment to support tactics development to enhance mission readiness.
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.
Efforts will include modernization of F-35 In-A-Box (FIAB) software development and integration, model fidelity and capability upgrades for existing threats/sensors/weapon models, development of new threat/sensor/weapon models, and environment upgrades to enable effective verification of Block 4 capabilities. Planning efforts will continue toward expansion of JSE capability to F-35 Training Sites.
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.
| Fiscal Year | Estimate Type | Amount ($M) |
|---|---|---|
| FY2025 | Actual | 7.5 |
| FY2026 | Enacted | 8.6 |
| FY2027 | Request | 11.3 |
This activity is 31% of project 2573's FY2027 request and 2.4% of PE 0604840M'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.
3 activities in project 2573
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 project page.