RDT&E Program Element · President's Budget PB2027

WS3 Vault Modernization

PE 0305155F·U.S. Air Force·Approp. 3600 — RDT&E·BA7 — Operational System Development
FY2027 Request
$24.4M
◆ Development crest → decline
◆ New start in FY2027 — no prior-year funding
HitchAI read

U.S. Air Force requests $24.4M in FY2027 against nothing enacted in FY2026 — the program's peak, with nothing planned by FY2031. In the FY2027 defense authorization, the House funded it in full; the Senate funded it in full; House appropriators funded it in full.

FY2027 Request
$24.4M
No FY2026 funding
FY2026 Enacted
$0.0M
No FY2025 funding
FY2025 Actual
$0.0M
Prior year

For fiscal year 2027, the U.S. Air Force is requesting $24.4M for WS3 Vault Modernization under RDT&E program element 0305155F, against nothing enacted in FY2026.

Funding trajectory

Funding profile, FY2025–FY2031

Prior years are actuals, the budget year is the request, and the outyears are the FYDP plan. Estimate types are colored and never summed into one figure.

00.0FY25ACTUAL0.0FY26ENACTED24.4FY27REQUEST21.5FY280.0FY290.0FY300.0FY31
Actual Enacted Request Outyear (FYDP)
Fiscal YearEstimate TypeAmount ($M)
FY2025Actual0.0
FY2026Enacted0.0
FY2027Request24.4
FY2028Outyear21.5
FY2029Outyear0.0
FY2030Outyear0.0
FY2031Outyear0.0
Where it sits

Acquisition lifecycle

This program is funded in RDT&E Budget Activity 7 — Operational System Development.

Complete
Research
BA 1–2
Complete
Advanced Technology
BA 3
Complete
Prototyping
BA 4
Current
Development & Fielding
BA 5–7
Inside the program element

1 project rolls up into PE 0305155F

Projects are the summable leaves — the PE total is their sum, never added to it. Program elements and projects carry the full five-year plan; activities stop at the budget year.

Project 674612

WS3 Vault Modernization

$24.4MFY2027 request NEW
FY2025 actual$0.0M
FY2026 enacted$0.0M
FY2027 request$24.4M
Product DevelopmentSupportTest and EvaluationManagement Services

The Weapon Storage and Security System (WS3) is a US maintained/operated system of systems that supports the nuclear mission by providing the capability to securely and safely store resources deployed in Europe. The Vault Modernization Program (VMP) ensures National Security Directive 42 (NSD-42) compliance and addresses system obsolescence issues. Detailed information is classified and can be provided. Funding is required for VMP to deliver an NSD-42 compliant encryption system necessary to secure forward deployed nuclear weapons in Europe in time to meet the required need date. A non-compliance will result in the need for US and NATO partner nations to post unplanned and unfunded security forces continuously until a compliant encryption system is delivered and installed. Detailed information is classified and can be provided. This program element included all necessary expenses required to manage, execute, and deliver weapon system capability. The use of such program funds would be in addition to the civilian pay expenses budgeted in program elements 0605829F, 0605831F, 0605833F, and 0605898F. This program is in Budget Activity 7, Operational System Development because this budget activity includes development efforts to upgrade systems that have been fielded or have received approval for full rate production and anticipate production funding in the current or subsequent fiscal year.

Accomplishments / planned programs (R-2A) — prior, current and budget year only
FY2025 actual
FY2026 enacted$0.0M
FY2027 request$24.4M

"Continue to incrementally fund the second task order for maturing the detailed specifications and design of the impacted vault subsystems. This effort encompasses adjudication of NSA encryption requirements. Additional detailed information is classified and can be provided at higher classification levels."

Read the FY2027 plan →
Congressional action

Congressional marks

Committee marks on the FY2027 request. Adds and cuts are reconciled in conference before they become law.

RequestPresident's Budget
$24.4M
House NDAA (HASC)HASC
$24.4M full · +$0
Senate NDAA (SASC)SASC
$24.4M full · +$0
House Approps (HAC-D)HAC_D
$24.4M full · +$0
unresolved as of 2026-07-27. These are FY2027 authorization marks (NDAA); appropriations and the conference agreement may differ.
Who's building it

Where the FY2027 request goes

Performers named in the R-3 exhibit, resolved into industry, government-lab, and unspecified shares. Budget-justification contract funding, not obligations.

Where FY2027 funding flowsShare$M
Other / unspecified100%24.4
FY2027 request100%24.4
Program detail

Mission & acquisition strategy

The Weapon Storage and Security System (WS3) is a US maintained/operated system of systems that supports the nuclear mission by providing the capability to securely and safely store resources deployed in Europe. The Vault Modernization Program (VMP) ensures National Security Directive 42 (NSD-42) compliance and addresses system obsolescence issues. Detailed information is classified and can be provided. Funding is required for VMP to deliver an NSD-42 compliant encryption system necessary to secure forward deployed nuclear weapons in Europe in time to meet the required need date.

N/A

Project 674612 — WS3 Vault Modernization
  • Product Development
  • Support
  • Test and Evaluation
  • Management Services
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Answers are generated from the figures on this page — the FY2027 justification exhibits and the marks tracked above — and nothing else is consulted. Confirm any figure against the cited exhibit before you use it externally.

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Questions this page can answer
How does the FY2027 request compare with FY2026, and what does the five-year plan show?What did the FY2027 NDAA committees do to this request?How is the FY2027 request split between industry and government performers?In plain terms, what is this program element for and how is it being acquired?

This page carries the budget justification and the NDAA marks — nothing else. For what a contractor has actually been obligated, the ledger is at hitchintel.com/vendors; for live solicitations, hitchintel.com/opportunities. Both are member surfaces.

Provenance

Cite this page

Sources
FY2027 Department of the Air Force RDT&E Budget Justification · Exhibits R-2 / R-3 · PE 0305155F (President's Budget PB2027) — and FY2027 NDAA committee marks, as tracked 2026-07-27.
Suggested citation
HitchAI, "WS3 Vault Modernization (PE 0305155F)," federal budget intelligence, PB2027 vintage. hitchintel.com/programs/0305155F
Machine access
Markdown twin /programs/0305155F.md · MCP mcp.hitchintel.combudget_get_program_element, budget_get_cong_marks