R-2A Activity · President's Budget PB2027

12) Host Response

FY2027 Request
$18.2M
▲ 42% vs FY2026
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This activity requests $18.2M in FY2027, 19% of project UN2, up 42% on FY2026. The R-2A exhibit describes it across FY2025–FY2027, including what the FY2027 money is planned to buy.

FY2027 Request
$18.2M
▲ 42% vs FY2026
FY2026 Enacted
$12.8M
▲ 29% vs FY2025
FY2025 Actual
$10.0M
Prior year
Planned work

What the FY2027 request buys

Verbatim from the R-2A exhibit for project UN2 of PE 0602384BP. 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

- Maintain and expand core host response characterization capabilities, predictive/in silico tools, and technologies for CB agent characterization, both computer-based as well as in living tissues – emphasizing the use of organ-on-a-chip technologies when possible. - Continue empirical studies addressing host response gaps for traditional and advanced CB agents identified by gap analyses. Maintain and expand characterization capabilities and expertise by tackling traditional gaps increasing capacity and pre-positioning expertise to any emerging CB threat. -Continue refinement of human effects estimates for additional CB agents providing high fidelity data to protect the warfighter against CB threat exposure. -Maintain and expand upgrades for computer-based prediction of physical and toxicological properties for chemical compounds and continue to assess the host responses to mixed agents and novel/emerging threats.

FY2026 to FY2027 change

Program/project funding transferred from another funding line. Funding transferred from Project EN2/Enabling Investments Enabling Science thrust area to Project UN2/Understand Host Response thrust area to expand host response characterization of biological agents of concern.

Before the request year

FY2025–FY2026: what came before

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

- Continue studies to address host response areas for traditional CB agents that earlier gap analyses have identified with methodologies that are also directly applicable to any emerging CB threat. - Continue to implement improvements and upgrades for artificial intelligence/machine learning (AI/ML) based prediction of physical and toxicological properties as one key new tool and continue to assess the body’s response to mixed agents and any novel/emerging threats. - Incorporate AI/ML predictions to refine in vitro and in vivo toxicological assessment to select experimentation most likely to yield actionable results.

FY2025 accomplishments

- Augmented predictive methods and technologies for CB agent characterizations, both computer-based as well as in living tissues – emphasized the use of organ-on-a-chip technologies to replace older methodologies. - Continued empirical studies addressing host response gaps for traditional and advanced CB agents identified by gap analyses. Augmented characterization capabilities and expertise by tackling traditional gaps increasing capacity and pre-positioning expertise to tackle any emerging CB threat. - Finalized refinement of human health estimates for key CB agents providing high fidelity data to protect the warfighter against CB threat exposure. - Implemented improvements and upgrades for computer-based prediction of physical and toxicological properties for chemical compounds and continued to assess the host responses to mixed agents and novel/emerging threats.

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.

010.0FY25ACTUAL12.8FY26ENACTED18.2FY27REQUEST
Actual Enacted Request
Fiscal YearEstimate TypeAmount ($M)
FY2025Actual10.0
FY2026Enacted12.8
FY2027Request18.2

This activity is 19% of project UN2's FY2027 request and 8.8% of PE 0602384BP'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

21 activities in project UN2

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.

12) Host Response — this activity$18.2M ▲ 42%
11) First Look$9.9M ▲ 13%
3) Chemical Biological Radiological Nuclear Situational Awareness$8.6M ▼ 41%
15) Unconventional Detection Modalities - Biological Detection$7.4M ▲ 213%
9) Employment Characterization$6.3M ▲ 36%
10) Environmental Response$6.1M ▲ 10%
21) Technical Surprise - Threat Agent Science Data and Optimization (TASDO)$6.0M ▲ 173%
13) Operational Biological Sensing$4.7M ▲ 65%
19) Technical Surprise$4.5M ▲ 75%
5) Diagnostic Building Blocks$4.0M ▲ 66%
20) Technical Surprise - Enhanced Biological Defense$3.0M flat
6) Emerging Threats$2.4M ▲ 60%
18) Unconventional Detection Modalities - Chemical Detection$2.0M ▼ 10%
14) Emerging and Enhanced Biothreat Sensing$2.0M ▼ 77%
16) Operational Chemical Sensing - Chemical Detection$1.9M ▼ 26%
2) Chemical Biological Radiological Nuclear Decision Aids$1.8M ▼ 14%
17) Modernized and Enhanced Chemical Sensing - Chemical Detection$1.8M ▼ 48%
4) Operational Diagnostics$1.6M ▲ 195%
1) Chemical Biological Radiological Nuclear Battlespace Sensing, Alerting, and Response$1.4M ▼ 61%
7) Diagnostic Building Blocks - Enhanced Biological Defense▼ 100%
8) Emerging Threats - Enhanced Biological Defense▼ 100%
Source
FY2027 Office of the Secretary of Defense RDT&E Budget Justification · Exhibit R-2A · PE 0602384BP, project UN2 (President's Budget PB2027). Congressional marks are recorded on the program element, never on an activity.
Machine access
Markdown twin /programs/0602384BP/UN2/a11.md · MCP mcp.hitchintel.combudget_get_activity