R-2A Activity · President's Budget PB2027

DARC Sites 1, 2 and 3 Operational Capability

Activity a0·Project 656565 — Ground Based SDA·PE 1206425SF·U.S. Space Force
FY2027 Request
$442.3M
◆ Restart — nothing in FY2026
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This activity requests $442.3M in FY2027, 100% of project 656565 — a restart, funded in FY2025 and zeroed in FY2026. The R-2A exhibit describes it across FY2026–FY2027, including what the FY2027 money is planned to buy.

Restart

This activity was funded in FY2025 ($226.3M), zeroed in FY2026, and requests $442.3M again in FY2027. A restart has an incumbent and a new start does not; with a zero current year there is no percentage to quote, which is why it appears in no growth ranking.

FY2027 Request
$442.3M
No FY2026 funding
FY2026 Enacted
$0.0M
▼ 100% vs FY2025
FY2025 Actual
$226.3M
Prior year
Planned work

What the FY2027 request buys

Verbatim from the R-2A exhibit for project 656565 of PE 1206425SF. 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

Complete Site 1 Operational Testing, deliver the Operational Leave-Behind Capability, and begin Interim Contract Support. Continue Site 2 pre-construction activities and begin site construction. For Site 3, the Program Office will initiate engineering and design work. These efforts include execution of critical activities such as coordination with the Federal Aviation Administration (FAA) to gain approval to use the U.S. site. The Program Office will initiate Government stakeholder collaboration to finalize all roles, responsibilities, and resources required for streamlined site development and operations.

FY2026 to FY2027 change

The FY 2026 spend plan amount includes 281,861 thousands of mandatory (reconciliation) funds. FY 2027 increased due to funding required for DARC Site 1 Interim Contract Support and increased funding needed for DARC Site 2 and DARC Site 3.

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

Mandatory funding would complete Site 1 system and software integration and developmental test activities. Complete the integration of all DARC Site 1 subsystems, such as antennas, racks and operations consoles. Begin Operational Test and Evaluation subsystems, such as antennas, racks and operations consoles for Site 1. Continue Site 2 design and development activities and complete Critical Design Review (CDR). Continue pre-construction activities, to include environmental work and any requirements from UK Towne & Planning council. Prepare for connection of fiber optics communication lines and infrastructure, such as the power grid, backup generators, and main water line. Begin purchasing Site 2 long-lead and facility hardware. For Site 3, the Program Office will execute pre-acquisition activities such as coordination with Federal Aviation Administration (FAA) to gain approval to use the U.S. site. Collaborate with Government stakeholders to finalize roles, responsibilities, and resources required for site development and operations. Rapidly respond to urgent needs by developing and implementing the system resiliency and domain awareness capabilities necessary to operate in the contested space domain and support USINDOPACOM activities. Activities may include, but are not limited to program office support, studies, technical analysis, experimentation, prototyping, and activities that may leverage commercial and international opportunities.

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.

1002003004000226.3FY25ACTUAL0.0FY26ENACTED442.3FY27REQUEST
Actual Enacted Request
Fiscal YearEstimate TypeAmount ($M)
FY2025Actual226.3
FY2026Enacted0.0
FY2027Request442.3

This activity is 100% of project 656565's FY2027 request and 34% of PE 1206425SF'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

1 activity in project 656565

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.

DARC Sites 1, 2 and 3 Operational Capability — this activity$442.3M RESTART
Source
FY2027 Department of the Air Force RDT&E Budget Justification · Exhibit R-2A · PE 1206425SF, project 656565 (President's Budget PB2027). Congressional marks are recorded on the program element, never on an activity.
Machine access
Markdown twin /programs/1206425SF/656565/a0.md · MCP mcp.hitchintel.combudget_get_activity