Skip to content
Fiscal Receipts

Joint Simulation Environment (JSE)

Air ForceRDT&EPartial Reconciliation0207606F

Watch this program: RSS · Atom

What it is
Joint Simulation Environment (JSE) (0207606F) is an Air Force research & development line funded in the Research, Development, Test and Evaluation, Air Force account. Its J-book detail breaks the line into 1 project.
What changed
+$111.2M FY25→26 R-1 TOA · PB2026
Who gets it
No award linkage at high confidence.

Budget Figures

FY24 Actuals
$0P-40 detail · PB2026
FY25 Total
$149.5MR-1 TOA · PB2026
FY26 Request
$260.7MR-1 TOA · PB2026
FY25→26 Change
+$111.2MR-1 TOA · PB2026

FY2026 award data is a partial year — USASpending awards are reported on a rolling basis and the fiscal year does not close until September 30. why partial FY2026 data? →

Budget Trajectory
The program's 3 summary figures for FY24 to FY26, plotted in fiscal-year order so the direction of travel is readable at a glance: this line ends higher than it starts. The points are the summary cards above, not a separate derivation; the table beside the chart carries each figure with its own citation.
The program's 3 summary figures for FY24 to FY26, plotted in fiscal-year order so the direction of travel is readable at a glance: this line ends higher than it starts. The points are the summary cards above, not a separate derivation; the table beside the chart carries each figure with its own citation.FY24: $0FY25: $149.5MFY26: $260.7MFY24FY25FY26
Budget trajectory: one row per fiscal year, carrying the summary figure the sparkline plots. Every figure opens its own citation.
Fiscal yearAmount
FY24$0P-40 detail · PB2026
FY25$149.5MR-1 TOA · PB2026
FY26$260.7MR-1 TOA · PB2026
Decade view — P-1/R-1 workbook TOA basis, shown compact in $B/$M (the workbook records USD thousands); each figure cites its own President's Budget edition
2 fiscal years of this program as published (FY2025–FY2026): a line through the actuals (filled dots), with the enacted (hollow circles) and request (diamonds) markers each edition reported. Read it for direction, not for precision — this program's actuals line is too short to show a direction. The grid below is the same data as text, one cited figure per cell.
2 fiscal years of this program as published (FY2025–FY2026): a line through the actuals (filled dots), with the enacted (hollow circles) and request (diamonds) markers each edition reported. Read it for direction, not for precision — this program's actuals line is too short to show a direction. The grid below is the same data as text, one cited figure per cell.FY2025 enacted — PB2026 editionFY2025 request — PB2025 editionFY2026 request — PB2026 editionFY25FY26

The vertical scale does not start at zero: the baseline sits just below this program’s smallest year, so a low point on this line is not a small amount. Read the shape for direction and the grid below for the figures.

● actuals (line)  ·  ○ enacted  ·  ◇ request — gaps are editions the program is absent from, never interpolated.

Decade series values by fiscal year and President's Budget edition: one row per series (actuals, enacted, request), one column per fiscal year. Every figure opens its own citation.
SeriesFY25FY26
Enacted$149.5M
Request$191.3M$260.7M

blank = series not published for this year; – = absent from that edition.

Program Lineage

No predecessor/successor lineage was recorded for this program element — no FY-to-FY transfer into or out of this line was stated in the ingested J-books, and none was inferred from the program structure.

Description

Mission Joint Simulation Environment

Joint Simulation Environment (JSE) is the Air Force's synthetic solution for High-End Advanced Training, Tactics, and Testing (HEAT3). JSE supports operational plan rehearsals, large force exercises, and aircrew training events. This capability directly supports United States Air Force Warfare Center (USAFWC), United States Air Force Weapons School, Air Force Test Center (AFTC), Air Force Operational Test and Evaluation Center (AFOTEC), and augments platform training efforts that cannot be performed in open air. JSE encompasses, but is not limited to, lab facilities for development and experimentation, as well as multiple test and training locations, to include, but not limited to: Joint Integrated Test & Training Center Nellis AFB (JITTC-N), Digital Test & Training Range Nellis AFB (DTTR-N), Digital Test & Training Range Edwards AFB (DTTR-E), and future planned location JITTC-Joint Base Elmendorf-Richardson (JITTC-E). JSE Platform-In-A-Box (PIAB) Operational Flight Program (OFP) Based Simulator Development: Entails the study, evaluation, early experimentation, and development for platforms beyond the current/existing F-35 capability. Activities include analysis of OFPs against JSE software and interface standards, as well as common hardware standards enabling remote monitoring, updates, and security management. JSE Digital Test and Training Ranges (DTTR): Maintains and upgrades existing test capabilities, to include the continuation of installation, integration, and verification/validation activities in support of fielded and future platforms and virtual air threats. Furthermore, the 445 Test Squadron at DTTR-E manages Developmental Test (DT) and Operational Test (OT) events, as well as cyber testing integration for the JSE Enterprise as part of their Lead Developmental Test Organization (LDTO) designation. JSE Core Environment Development/Integration: Continues to develop JSE foundational capabilities enabling further test, integration, and training. Activities include but are not limited to experimentation, development/enhancement of JSE connected systems, tools, services, hardware, and simulators to integrate new and existing digital entities (platforms, sensors, adversary & friendly weapons, ground & airborne threats), and common services including but not limited to weather effects, infrared (IR) models, cyber, and space. Funding may also be used to address Diminishing Manufacturing Sources (DMS) issues, obsolescence resolution and similar emerging requirements, as well as for overarching programmatic support. Funding for this exhibit is contained in PE 0207606F. This requirement supports performance of a full financial audit as required by title 10 U.S.C. Chapter 9A, Sec 240-D. This program element may include necessary civilian pay 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 element 0605829F, 0605831F, 0605833F, 0605898F. As this PE was established in FY 2025, FY 2024 civilian pay costs are not applicable, and in FY25 10.395M is forecasted for civilian pay expenses in this program element. This effort is in Budget Activity 4, Advanced Component Development and Prototypes (ACD&P), because efforts are necessary to evaluate integrated technologies, representative modes or prototype systems in a high fidelity and realistic operating environment.

Justification

Accomplishments & Planned Programs (3)

JSE Platform In-A-Box (PIAB) and Pilot Vehicle Interface (PIV) Hardware Simulator Development

Includes, but is not limited to, platform study, evaluation, and early experimentation activities to assess OFPs against JSE Government Simulator Interface (GSI) and Simulator Common Architecture, Requirements, & Standards (SCARS), and develop high-fidelity Platform OFP-based simulator and accompanying high-fidelity mission system and sensor models. Involves the evaluation and integration of new and emerging technologies including, but not limited to, Extended Reality (XR)/Virtual Reality (VR) goggle capability, artificial intelligence (AI), and common hardware solutions, to include common cockpit configurations for training-focused sites. Supports research and development activities to generate data/conduct analysis to support the integration and testing of platform OFP-based simulators.

JSE Digital Test and Training Ranges (DTTRs)

Maintains and expands existing test capabilities, to include platform installation, integration, and verification and validation activities at the DTTRs and the Joint Integrated Test and Training Centers (JITTCs). Supports ongoing day-to-day digital test range operations, JSE organic development capability, along with fielded and future Developmental Test & Evaluation (DT&E) and Operational Test & Evaluation (OT&E) activities. Establishes and expands on hardware in-the-loop testing capability, future platform testing capability, and continues early experimentation efforts.

JSE Core Environment Development/Integration

Continue the development of JSE capabilities enabling further test, integration, and training. Development activities are accomplished by leveraging Department of the Air Force (DAF) and Department of the Navy (DoN) organic software development capabilities at geographically separated locations using secure development enclaves across multiple classification levels enabling simultaneous developer access, known collectively as the JSE collaborative development environment. JSE collaborative development environment provides the foundation for secure digital collaboration, to perform development, security, and operations (DevSecOps) activities, manage development, share code, evaluate new capabilities, and distribute updated software versions to all connected locations. Costs include, but are not limited to, establishing equipment, personnel, processes, contracts, etc. to support JSE product development.

Budget Line Items(workbook-cited)

P-1/R-1 workbook Total Obligation Authority basis (USD thousands) · PB2026.

Exhibit R-1

AccountOrgTypeAmount
Research, Development, Test and Evaluation, Air ForceFFY25 Enacted$149.5M
Research, Development, Test and Evaluation, Air ForceFFY25 Total$149.5M
Research, Development, Test and Evaluation, Air ForceFFY26 Disc. Request$260.7M
Research, Development, Test and Evaluation, Air ForceFFY26 Total$260.7M

Budget Details(R-2/P-40 facts)

J-book detail basis (R-2/P-40, USD millions) · PB2026 — a different accounting basis from the P-1/R-1 workbook TOA above; where the two disagree, the reconciliation strip under Budget Figures shows both.

Wider than this screen — swipe the table sideways for the remaining fiscal-year columns.

ProjectAll Prior YearsFY24 ActualsFY25 TotalFY26 BaseFY26 Request
Program Element$0$0$149.5M$260.7M$260.7M
642407: Joint Simulation Environment$0$0$149.5M$260.7M$260.7M

No follow-the-dollar view — this program's awards haven't been crosswalked at high confidence (flows cover 17 of 1,741 programs). why coverage is partial? →

Awards

No awards are linked to this program element at high confidence — the budget→award crosswalk only asserts links it can defend, and this line has none yet.

Lobbying Mentions

1 mention from the Senate LDA disclosure database.

SCIENCE APPLICATIONS INTERNATIONAL CORPORATIONSimulation|Environment2026matched 2+ title words

S.2296 - National Defense Authorization Act for Fiscal Year 2026 H.R. 3838, the Streamlining Procurement for Effective…

Oversight

Department-level designation (not specific to this program)

GAO lists 5 high-risk areas for DOD as a whole. That designation covers the department, not Joint Simulation Environment (JSE) — no program-specific GAO finding for this line is in the ingested data. See the DOD oversight record.

No research dossier for this program — dossiers cover 50 of 1,741 programs, the largest fully J-book-detailed lines by FY2026 requested dollars. why no dossier here? →