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Fiscal Receipts
Field guide · Air · USAF

F-15 The Eagle family.

F-15E Squadrons

Air ForceRDT&EReconciledPE0207134F
What it is
F-15E Squadrons (0207134F) 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
+$74.4M FY25→26 R-1 TOA · PB2026
Who gets it
No company is linked to this line. Award records do not carry the program element, so the crosswalk is silent here — why.

Budget figures

FY24 Actuals
$40.3MR-1 TOA · PB2026
FY25 Total
$158.6MR-1 TOA · PB2026
FY26 Request
$233.0MR-1 TOA · PB2026
FY25→26 Change
+$74.4MR-1 TOA · PB2026
Data coverage

FY2026 award data is a partial year — USAspending reports awards on a rolling basis, and this corpus runs through 2026-09-04. why partial FY2026 data? →

Budget trajectory

The program's 3 summary figures for FY24 to FY26, plotted in fiscal-year order: 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: 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: $40.3MFY25: $158.6MFY26: $233.0MFY24FY25FY26
Budget trajectory: one row per fiscal year, carrying the summary figure the sparkline plots. Every figure opens its own citation.
Fiscal yearAmount
FY24$40.3M
FY25$158.6M
FY26$233.0M

All series figures: R-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

12 fiscal years of this program as published (FY2015–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 falls across the span. The grid below is the same data as text, one cited figure per cell.
12 fiscal years of this program as published (FY2015–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 falls across the span. The grid below is the same data as text, one cited figure per cell.FY2015 actuals — PB2017 editionFY2016 actuals — PB2018 editionFY2017 actuals — PB2019 editionFY2018 actuals — PB2020 editionFY2019 actuals — PB2021 editionFY2020 actuals — PB2022 editionFY2021 actuals — PB2023 editionFY2022 actuals — PB2024 editionFY2023 actuals — PB2025 editionFY2024 actuals — PB2026 editionFY2016 enacted — PB2017 editionFY2017 enacted — PB2018 editionFY2018 enacted — PB2019 editionFY2019 enacted — PB2020 editionFY2020 enacted — PB2021 editionFY2021 enacted — PB2022 editionFY2022 enacted — PB2023 editionFY2023 enacted — PB2024 editionFY2024 enacted — PB2025 editionFY2025 enacted — PB2026 editionFY2017 request — PB2017 editionFY2018 request — PB2018 editionFY2019 request — PB2019 editionFY2020 request — PB2020 editionFY2021 request — PB2021 editionFY2022 request — PB2022 editionFY2023 request — PB2023 editionFY2024 request — PB2024 editionFY2025 request — PB2025 editionFY2026 request — PB2026 editionFY15FY18FY20FY22FY24FY26

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.
SeriesFY15FY16FY17FY18FY19FY20FY21FY22FY23FY24FY25FY26
Actuals$233.9M$210.0M$344.2M$308.2M$196.0M$640.1M$230.3M$231.9M$193.3M$40.3M
Enacted$206.0M$356.7M$320.3M$203.2M$684.2M$288.4M$239.6M$200.1M$51.0M$158.6M
Request$356.7M$320.3M$192.9M$336.1M$298.9M$239.6M$213.3M$51.0M$178.6M$233.0M

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

Asked vs spent: the PB2020 book requested $336.1M for FY2020; the PB2022 book reported $640.1M as actual total obligation authority — $304.0M above the request. 640.1 − 336.1 = 304.0 USD millions — the compact figures above are rounded for reading.

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 — F-15E Squadrons

The F-15C continues to provide air superiority with an undefeated and unmatched aerial combat record. The F-15E retains this air superiority capability and adds systems, such as conformal fuel tanks (CFTs), advanced imaging and targeting systems, to meet the requirement for all-weather, deep-penetration, and night/under-the-weather, air-to-surface attack. Upgrades to F-15 aircraft are critical to maintaining combat viability (lethality, survivability, and supportability) in support of the National Defense Strategy. With newer F-15E aircraft projected to remain in service past 2040, avionics modernization is key to long-term weapon system viability. Major avionics upgrades include radar modernization (both hardware and software) and capability enhancements via precision timing, data delivery and processing technology, precision registration systems, display optimization, instrumentation digitization and modernization, central computer processing power increases, digital mission event recording systems, and an infrared (IR)-based fire control system. The proliferation of fourth-generation enemy aircraft and sophisticated "double-digit" anti-aircraft missile systems pose a significant threat to F-15 survivability. A fully integrated electronic warfare suite holds the promise of providing improved survivability as well as expanded electronic attack capability. Nearly all new avionics or weapons capabilities require an Operational Flight Program (OFP) software update to fully employ the capability. OFP updates are directly linked to ACC prioritized capability needs which are continuously assessed and updated. OFP's agile development framework provides the ability to quickly change capability development focus to meet the time-based need to mitigate and defeat emerging threats. The OFP agile development framework integrates and deploys new capabilities on an annual basis to incorporate new technology/equipment or improvements for support equipment, mission planning systems, and training device upgrades which enhance performance, supportability, and aircrew training. Funds may be used to resolve issues among the F-15 fleet (e.g., emerging safety of flight issues and diminishing manufacturing sources), to accommodate technology insertion, and to fulfill Federal Aviation Administration (FAA) or other mandates necessary to ensure continued aircrew safety and mission effectiveness. This includes technical and acquisition-related studies to ensure F-15 lethality and survivability beyond 2040. 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, or 0605898F. In FY 2024 1.794M was expended for civilian pay expenses in this program element, and in FY 2025 1.095M is forecast for civilian pay expenses in this program element. The FY 2026 request was reduced by 0.555 million for Advisory and Assistance Services to promote efficiencies and advance the policies of the Administration in alignment with Executive Order 14222, "Implementing the President's Department of Government Efficiency Cost Efficiency Initiative.” 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.

Mission — F-15 Modernization

F-15 Modernization development efforts continue the weapon system's evolution in support of the National Defense Strategy (NDS), ensuring the fleet can meet urgent and future capability needs, as well as compliment 5th-generation aircraft by bringing substantial capacity for long-range fires, sensors, and electronic warfare (EW) capabilities. The programs below provide the F-15 fleet with electronic protection (EP) improvements, electronic attack (EA) improvements, advanced capabilities, threat and vulnerability mitigation, continued nuclear mission certification, and integration of new and upgraded weapons. Operational Flight Program (OFP) funding provides for ongoing software and hardware upgrades needed to meet and defeat emerging threats; integrate new and changing weapons, offensive and defensive avionics capabilities, and sensor capabilities; and support nuclear certification and aircraft subsystems. Funds also provide for resolution of emerging safety of flight issues, technology insertion, training system updates, and compliance with Federal, Department of Defense, or Air Force mandates that are necessary to ensure continued aircrew safety and mission effectiveness. Funds may also help resolve diminishing manufacturing sources issues. In 2023, the OFP program transitioned to a Continuous Development and Integration (CD&I) approach to deliver annual software releases via agile development techniques. This approach has demonstrated the ability to combat the speed of adversary technology evolution and ensure the F-15 fleet maintains a competitive advantage. At any one time there will be up to three OFP upgrades in work: one in requirements definition, one in code writing and test, and one in flight test and release preparation. Flight Test funding supports ongoing F-15 Modernization by providing baseline infrastructure and personnel support for developmental test (DT) and operational test (OT) operations. In FY 2026, the Flight Test budget request includes funds for upgrading test jets to meet DT & OT requirements. Radar Enhancements (RE) will continue the upgrade for digital Active Electronic Scanned Array (AESA) radar capabilities to counter sophisticated electronic threats and provide other capability improvements. OFP updates are required to ensure radar EP and EA improvements, and advanced capabilities, are seamlessly integrated into the F-15 fleet. Infrared Search and Track (IRST) system provides air to air detection, tracking, and ranging capabilities in a radar-contested environment. Multifunctional Information Distribution System - Joint Tactical Radio System (MIDS-JTRS) integrates a new Link 16 system that complies with a National Security Agency (NSA) mandate on cryptographic modernization and a Federal Aviation Administration (FAA) mandate on frequency remapping. The FAA mandate requires all fielded Link-16 terminals incorporate the frequency re-mapping capability by 2025. Data Transfer Module II (DTM II) is an upgraded replacement for the existing low-memory data transfer system. This system improves and supports mission planning capability and weapons employment, increases storage, replaces the aging mapping system, updates interfaces, provides data encryption, and delivers improved cybersecurity. GPS M-Code / Resilient-Embedded GPS Inertial Navigation System (R-EGI) will provide enhanced Position, Navigation, and Timing (PNT) capabilities and improved resistance to existing and emerging threats to GPS, such as jamming and spoofing. Mobile User Objective System (MUOS)/Second Generation Anti-jam Tactical UHF Radio for NATO (SATURN) will provide Satellite Communications (SATCOM) capable Air Force F-15 aircraft the ability to communicate on the MUOS constellation in support of a NORTHCOM Airspace Control Alert (ACA) requirement. SATURN will replace the Have Quick II and comply with the NSA lease key mandated dates. Eagle Tether will provide a satellite communications capability. The program leverages technology developed under AFRL Global Lightning, as well as terminal and aperture capabilities developed in Advanced Battle Management System (ABMS) PE 0604003F, to eliminate duplication of effort, optimize capability delivery in alignment with the C3BM DAF BATTLE NETWORK architecture, and enable Long Range Kill Chain (LRKC) capabilities. This effort is a FY 2026 New Start.

Justification

Accomplishments & Planned Programs (6)

Operational Flight Program (OFP) Development Efforts

The OFP program provides software and hardware updates required to integrate and operationally implement new capabilities on F-15C, F-15D, F-15E, and F-15EX aircraft.

Flight Test

Flight Test funding supports test capability modernization and continuance; provides baseline infrastructure and personnel for F-15 Developmental Test (DT) and Operational Test (OT) operations; and procures long-lead test support assets, unique lab and test aircraft instrumentation.

F-15 Radar Enhancements (RE)

Improves F-15 radar capabilities. This includes technical and acquisition related studies as well as future capability enhancements.

F-15E Data Transfer Module II

The Data Transfer Module II (DTM II) is an upgraded replacement to the current, low-memory data transfer system. It improves and supports mission planning capabilities and weapons employment, increases storage, replaces an aging mapping system, updates interfaces, provides data encryption, and delivers improved cybersecurity.

GPS M-Code / R-EGI

GPS M-Code / Resilient-Embedded GPS Inertial Navigation System (R-EGI) will provide enhanced Position Navigation & Timing (PNT) capabilities and improved resistance to existing and emerging threats to GPS, such as jamming and spoofing. The Air Force's PNT program office manages R-EGI development, which will yield an M-Code enabled, Government-owned solution, leveraging Open System Architecture. Thus, R-EGI will provide a modular and adaptive PNT solution when integrated into the F-15E and F-15EX fleets. Funding requested in this exhibit specifically supports R-EGI integration on the F-15 platform.

Eagle Tether

Eagle Tether is an F-15E and EX single constellation satellite communications solution. The program leverages terminal and aperture capabilities developed in Advanced Battle Management System (ABMS), while optimizing capabilities in alignment with the DAF Battle Network architecture to enable Long-Rang Kill Chain.

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 ForceFFY24 Actuals$40.3M
Research, Development, Test and Evaluation, Air ForceFFY25 Enacted$158.6M
Research, Development, Test and Evaluation, Air ForceFFY25 Total$158.6M
Research, Development, Test and Evaluation, Air ForceFFY26 Disc. Request$233.0M
Research, Development, Test and Evaluation, Air ForceFFY26 Total$233.0M

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$40.3M$158.6M$233.0M$233.0M
676020: F-15 Modernization$0$40.3M$158.6M$233.0M$233.0M

Follow the dollar

No follow-the-dollar view — this program's awards haven't been crosswalked at high confidence (flows cover 312 of 1,938 programs). why coverage is partial? →

Awards

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

Lobbying mentions

No Senate LDA lobbying filing in the tracked data mentions this program element by code or alias.

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 F-15E Squadrons. No program-specific GAO finding for this line is in the ingested data. See the DOD oversight record.

Program dossier

No research dossier for this program — dossiers cover 50 of 1,938 programs, the largest fully J-book-detailed lines by FY2026 requested dollars. why no dossier here? →

Primary sources

Open any budget figure for its exact receipt. Verified line items lead with the highlighted government PDF; original spreadsheets download with their budget edition and exhibit in the filename.

Budget totals · TOA sources

Detailed budget justification

The related TOA spreadsheets above use a different accounting basis from R-2/P-40 detail. Their amounts are not assumed to match these detailed sources.