Project E10
$33.2MFY2027 request ▲ 76%Sentinel
FY2025 actual$26.2M
FY2026 enacted$18.9M
FY2027 request$33.2M
Management ServicesProduct DevelopmentTest and Evaluation
FY2027 Request
$58.3M
▲ 9.5% vs FY2026
FY2026 Enacted
$53.2M
▲ 33% vs FY2025
FY2025 Actual
$40.1M
Prior year
Roll-up of 2 projects. Projects are the summable leaves — the PE total is their sum, never added to it.
For fiscal year 2027, the U.S. Army is requesting $58.3M for Radar Development under RDT&E program element 0604820A, up 9.5% over FY2026.
Funding trajectory
Funding profile, FY2025–FY2031
Prior years are actuals, the budget year is the request, and the outyears are the FYDP plan. Estimate types are colored and never summed into one figure.
Actual Enacted Request Outyear (FYDP)
| Fiscal Year | Estimate Type | Amount ($M) |
|---|---|---|
| FY2025 | Actual | 40.1 |
| FY2026 | Enacted | 53.2 |
| FY2027 | Request | 58.3 |
| FY2028 | Outyear | 188.1 |
| FY2029 | Outyear | 60.4 |
| FY2030 | Outyear | 60.4 |
| FY2031 | Outyear | 61.0 |
Where it sits
Acquisition lifecycle
This program is funded in RDT&E Budget Activity 5 — System Development & Demonstration.
Complete
Research
BA 1–2
Complete
Advanced Technology
BA 3
Complete
Prototyping
BA 4
Current
Development & Fielding
BA 5–7
Inside the program element
2 projects roll up into PE 0604820A
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. This PE moves 9% overall, which can hide much larger swings below.
Project PS1
$25.0MFY2027 request ▼ 27%Army Long Range Persistent Surveillance (ALPS)
FY2025 actual$13.8M
FY2026 enacted$34.4M
FY2027 request$25.0M
Management ServicesProduct DevelopmentTest and Evaluation
Congressional action
Congressional marks
Committee marks on the FY2027 request. Adds and cuts are reconciled in conference before they become law.
RequestPresident's Budget
$58.3M
House NDAA (HASC)HASC
$58.3M full · +$0
Senate NDAA (SASC)SASC
$58.3M full · +$0
House Approps (HAC-D)HAC_D
$58.3M 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.
Lockheed Martin
$15.0M · 26%
| Where FY2027 funding flows | Share | $M |
|---|---|---|
| Industry primes | 26% | 15.0 |
| Other / unspecified | 74% | 43.3 |
| FY2027 request | 100% | 58.3 |
Program detail
Mission & acquisition strategy
Supports enhancements, upgrades and continued testing of the Army Modernization Priorities in support of the Sentinel Radar programs and will provide for an incrementally fielded Integrated Air and Missile Defense Fire Control System/capability for the composite Army Air and Missile Defense Brigades. The Sentinel systems are a key component of the Army Integrated Air and Missile Defense (AIAMD) architecture, providing critical air surveillance of the forward areas.
The Sentinel A4 modification was competitively awarded to Lockheed Martin as a Fixed Price Incentive Firm (FPIF) contract to develop a modified Sentinel with a new Active Electronically Scanned Array (AESA) antenna. The Sentinel A3 and its predecessors were procured from Raytheon as a non-developmental item. The U.S. Government does not have adequate data rights for the Sentinel A3 and its predecessors; therefore no other contractor has the technical ability to modify the Sentinel A3 radar or Sentinel A3 software. The Sentinel programs are a component of an integrated fires development effort that includes survivability, resiliency, and effectiveness improvements against advanced threats from adversaries.
Project E10, PS1 — Sentinel
- Management Services
- Product Development
- Test and Evaluation
Ask Hitch
Ask this program element
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.
H
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?Which project inside PE 0604820A is growing fastest, and which is shrinking?How is the FY2027 request split between industry and government performers?
This page carries the budget justification and the NDAA marks — nothing else. For what Lockheed Martin 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 Army RDT&E Budget Justification · Exhibits R-2 / R-3 · PE 0604820A (President's Budget PB2027) — and FY2027 NDAA committee marks, as tracked 2026-07-27.
Suggested citation
HitchAI, "Radar Development (PE 0604820A)," federal budget intelligence, PB2027 vintage. hitchintel.com/programs/0604820A
Machine access
Markdown twin
/programs/0604820A.md · MCP mcp.hitchintel.com → budget_get_program_element, budget_get_cong_marksFY2027 Request
$33.2M
▲ 76% vs FY2026
FY2026 Enacted
$18.9M
▼ 28% vs FY2025
FY2025 Actual
$26.2M
Prior year
Sentinel — one RDT&E project inside PE 0604820A. Congressional marks are recorded on the program element, not on a project.
Project E10 — Sentinel — requests $33.2M in FY2027, 57% of the $58.3M requested for program element 0604820A. Year over year it grows 76% against FY2026.
Funding trajectory
Project E10 funding, FY2025–FY2031
Prior years are actuals, the budget year is the request, and the outyears are the FYDP plan. Estimate types are colored and never summed into one figure. Projects carry the full five-year plan; the activities inside them stop at the budget year.
Actual Enacted Request Outyear (FYDP)
| Fiscal Year | Estimate Type | Amount ($M) |
|---|---|---|
| FY2025 | Actual | 26.2 |
| FY2026 | Enacted | 18.9 |
| FY2027 | Request | 33.2 |
| FY2028 | Outyear | 150.8 |
| FY2029 | Outyear | 28.3 |
| FY2030 | Outyear | 28.3 |
| FY2031 | Outyear | 28.6 |
Inside the project
3 accomplishments / planned programs
The R-2A exhibit. Activities carry the prior, current and budget year only — no five-year plan — and they are descriptive: coverage is partial and they do not always add back to the project, so count them, never total them. Opening lines only here — the full year-by-year narrative is on the project page.
Product Development▲ 34%
FY2025 actual$13.1M
FY2026 enacted$9.0M
FY2027 request$12.1M
Sentinel A4: Continuously integrate and deliver software enhancements to Sentinel A4 to combat evolving threat based on phase two of IOT&E findings. The program will develop and implement new signal processing techniques and waveforms to enhance Electronic Attack and Electronic Protect techniques based on the evolving threat, further…
Read the FY2027 plan →Test & Evaluation▲ 13%
FY2025 actual$13.1M
FY2026 enacted$9.8M
FY2027 request$11.1M
Sentinel A4: Funding will support further developmental and operational testing of the Sentinel A4 program against evolving theater specific threats. Will allow for continued software qualification and hardware testing, as well as field testing against representative targets. Sentinel A3: Funding supports required documentation for…
Read the FY2027 plan →FY2025 actual—
FY2026 enacted—
FY2027 request$10.0M
- Develop and implement new signal processing techniques and waveforms to enhance Electronic Attack and Electronic Protect techniques based on the evolving threat, further enhancing radar survival and effectiveness in contested environments - Continue to develop software following the combined practices of Continuous…
Read the FY2027 plan →Who's building it
Named performers on project E10
Performers named in the R-3 exhibit under this project. Share is of the project's whole FY2027 R-3 total — the same denominator the program-element split uses, so the two read on one scale and will not sum to 100% when unnamed or government work is in the mix. Budget-justification contract funding, not obligations.
Lockheed Martin
$15.0M · 45%
Project detail
What project E10 buys
Supports enhancements, upgrades and continued testing of the Army Modernization Priorities in support of the Sentinel Radar programs and will provide for an incrementally fielded Integrated Air and Missile Defense Fire Control System/capability for the composite Army Air and Missile Defense Brigades. The Sentinel systems are a key component of the Army Integrated Air and Missile Defense (AIAMD) architecture, providing critical air surveillance of the forward areas. The Sentinel A4 utilizes Active Electronically Scanned Array (AESA) technology that is a ground-based sensor system designed to locate, identify and track Cruise Missiles, Fixed-Wing and Rotary-Wing Aircraft, Unmanned Aircraft Systems and Rocket, Artillery, and Mortar (RAM) projectiles. The simultaneous multi-mission Sentinel A4 system will provide 360-degree surveillance and tracking with the ability to handle simultaneous threats arriving from different azimuths. The Sentinel A3 consists of a trailer mounted radar with its prime mover, generator, identification Friend or Foe (IFF) system and Forward Area Air Defense Command, Control and Intelligence (FAAD C2I) systems interface. The Sentinel A3 provides persistent surveillance and fire control quality data on Army and Joint networks through external C2 platforms enabling protection of U.S. and coalition forces as well as critical geo-political assets against Cruise Missiles (CM), Fixed-Wing, Rotary-Wing Aircraft and Unmanned Aircraft System (UAS) threats.
R-3 lines of work
- Management Services
- Product Development
- Test and Evaluation
FY2027 Request
$25.0M
▼ 27% vs FY2026
FY2026 Enacted
$34.4M
▲ 148% vs FY2025
FY2025 Actual
$13.8M
Prior year
Army Long Range Persistent Surveillance (ALPS) — one RDT&E project inside PE 0604820A. Congressional marks are recorded on the program element, not on a project.
Project PS1 — Army Long Range Persistent Surveillance (ALPS) — requests $25.0M in FY2027, 43% of the $58.3M requested for program element 0604820A. Year over year it falls 27% against FY2026.
Funding trajectory
Project PS1 funding, FY2025–FY2031
Prior years are actuals, the budget year is the request, and the outyears are the FYDP plan. Estimate types are colored and never summed into one figure. Projects carry the full five-year plan; the activities inside them stop at the budget year.
Actual Enacted Request Outyear (FYDP)
| Fiscal Year | Estimate Type | Amount ($M) |
|---|---|---|
| FY2025 | Actual | 13.8 |
| FY2026 | Enacted | 34.4 |
| FY2027 | Request | 25.0 |
| FY2028 | Outyear | 37.2 |
| FY2029 | Outyear | 32.0 |
| FY2030 | Outyear | 32.1 |
| FY2031 | Outyear | 32.4 |
Inside the project
1 accomplishment / planned program
The R-2A exhibit. Activities carry the prior, current and budget year only — no five-year plan — and they are descriptive: coverage is partial and they do not always add back to the project, so count them, never total them. Opening lines only here — the full year-by-year narrative is on the project page.
FY2025 actual$13.8M
FY2026 enacted$34.4M
FY2027 request$25.0M
FY 2027 funds will support: - Continue building of prototype assets to be used for qualification and developmental testing - Validate Safety and Human System Integration designs - Begin Developmental testing - Participate in Transformation in Contact (TIC) activities
Read the FY2027 plan →Project detail
What project PS1 buys
The FY 2027 request for ALPS includes $25.042 million of funding. These funds will support the Army Long-Range Persistent Surveillance (ALPS) sensor, which is a persistent, passive air surveillance sensor system. ALPS capabilities include long-range, 360-degree surveillance against conventional fixed wing and rotary wing aircraft, UAS, and cruise missiles. ALPS supports tactical to strategic operations via its capability to connect with multiple Army and Joint Command and Control systems including the Integrated Fire Control Network (IFCN). In FY 2025, Project PS1 /Army Long Range Persistent Surveillance (ALPS) was a new effort realigned within PE 0604820A / Radar Development. Funding realigned from PE 0604741A / Air Defense Command Control and Intelligence - Eng Dev, Project 126 /PEO Electronic Protect for the design, development, integration, and test of ALPS. The ALPS program was started as an urgent capability in response to multiple Combatant Commands identified operational needs. The ALPS program tasks include all programmatic and engineering activities needed to modernize systems currently supporting multiple Combatant Commands and design/development effort to provide a passive mobile capability to Army Air and Missile Defense forces.
R-3 lines of work
- Management Services
- Product Development
- Test and Evaluation