RDT&E Program Element · President's Budget PB2027

Lower Tier Air Missile Defense (LTAMD) Sensor

PE 0604114A·U.S. Army·Approp. 2040 — RDT&E·BA4 — Advanced Component Development & Prototypes
FY2027 Request
$162.1M
Army · RDT&E
HitchAI read

U.S. Army funding falls 16% to a $162.1M request in FY2027 (down from a FY2026 peak). In the FY2027 defense authorization, the House funded it in full; the Senate funded it in full; House appropriators funded it in full. RTX / Raytheon leads the industry work.

FY2027 Request
$162.1M
▼ 16% vs FY2026
FY2026 Enacted
$192.0M
▲ 56% vs FY2025
FY2025 Actual
$122.8M
Prior year

For fiscal year 2027, the U.S. Army is requesting $162.1M for Lower Tier Air Missile Defense (LTAMD) Sensor under RDT&E program element 0604114A, down 16% from 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.

501001500122.8FY25ACTUAL192.0FY26ENACTED162.1FY27REQUEST153.3FY28129.3FY29139.1FY30140.3FY31
Actual Enacted Request Outyear (FYDP)
Fiscal YearEstimate TypeAmount ($M)
FY2025Actual122.8
FY2026Enacted192.0
FY2027Request162.1
FY2028Outyear153.3
FY2029Outyear129.3
FY2030Outyear139.1
FY2031Outyear140.3
Where it sits

Acquisition lifecycle

This program is funded in RDT&E Budget Activity 4 — Advanced Component Development & Prototypes.

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

1 project rolls up into PE 0604114A

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 -16% overall, which can hide much larger swings below.

Project EX2

Lower Tier Air Missile Defense (LTAMD) Capability

$162.1MFY2027 request ▼ 16%
FY2025 actual$122.8M
FY2026 enacted$192.0M
FY2027 request$162.1M
Management ServicesProduct DevelopmentSupportTest and Evaluation

This funding line is directly aligned to the Army Air and Missile Defense Modernization Priority. The LTAMDS Radar Set (RS) replaces the baseline Patriot RS (AN/MPQ-65A) in an Integrated Air and Missile Defense Battle Command System (IBCS) enabled Patriot Battalion mitigating risk associated with threat advances and decreases Operations and Support (O&S) costs due to growing obsolescence. Additionally, the LTAMDS RS capability maximizes the inherent PAC-3 Missile Segment Enhancement (MSE) Interceptor capabilities to engage threats at greater ranges addressing critical capability gaps, providing modernized technology, and increasing reliability and maintainability. The Lower Tier Air Missile Defense Sensor (LTAMDS) is the Army's premier next generation radar intended to sense and track Tactical Ballistic Missiles and Air Breathing Threats; expand the lower tier air and missile defense battle space and provide 360-degree sensing capability, surveillance, and fire control quality data. The FY 2027 request for LTAMDS includes $162.074 million to enhance capability through LTAMDS Continuous Integration and Continuous Delivery (CI/CD) of software and hardware, complete LTAMDS Initial Operational Test & Evaluation (IOT&E) events, and further Electronic Attack/Electronic Protect (EA/EP) capability. Major LTAMDS CI/CD efforts include tactical software development, modeling and simulation, integration, and testing to increase overall LTAMDS capability against novel and stressing threats, thus providing the war fighter a leading advantage in a contested environment. Combat Identification (CID) / Discrimination Updates: This includes CID development and upgrades to improve radar classification, discrimination, and optimization of multi-function capabilities to enhance performance against current and emerging threats in stressing environments. Upgrades play a critical role in increasing operational effectiveness by providing the war fighter enhanced command and control, effective resource allocation measures, and improved situational awareness. Advanced Threat: LTAMDS will continue to counter adversary threat evolution in complexity, capability, and capacity in simultaneous combatant commands. This development effort is required to continue to provide over match radar capability.

Accomplishments / planned programs (R-2A) — prior, current and budget year only
FY2025 actual$122.8M
FY2026 enacted$192.0M
FY2027 request$162.1M

Management Services: Funding in FY 2027 provides continued mission essential office operations, programmatic analysis, and functional services in direct support of the LTAMDS Product Office. Funding also supports continued development of formal acquisition documentation in support of acquisition milestones and objectives, management of…

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
$162.1M
House NDAA (HASC)HASC
$162.1M full · +$0
Senate NDAA (SASC)SASC
$162.1M full · +$0
House Approps (HAC-D)HAC_D
$162.1M 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.

RTX / Raytheon
$74.3M · 46%
Continuous Integration/Continuous Delivery
RDEC, SED, WSMR- T&E Support
$25.4M · 16%
Test
Where FY2027 funding flowsShare$M
Industry primes66%107.5
Government labs & warfare centers7.5%12.1
Other / unspecified26%42.4
FY2027 request100%162.1
See RTX / Raytheon's full federal contract ledger members
Program detail

Mission & acquisition strategy

This funding line is directly aligned to the Army Air and Missile Defense Modernization Priority. The LTAMDS Radar Set (RS) replaces the baseline Patriot RS (AN/MPQ-65A) in an Integrated Air and Missile Defense Battle Command System (IBCS) enabled Patriot Battalion mitigating risk associated with threat advances and decreases Operations and Support (O&S) costs due to growing obsolescence. Additionally, the LTAMDS RS capability maximizes the inherent PAC-3 Missile Segment Enhancement (MSE) Interceptor capabilities to engage threats at greater ranges addressing critical capability gaps, providing modernized technology, and increasing reliability and maintainability.

On 25 September 2018, the Army Acquisition Executive (AAE) approved the execution of the LTAMDS Middle Tier Acquisition (MTA) (Sec. 804) for rapid prototyping. The Army conducted a Sense-Off in 3Q FY 2019 with multiple vendors to demonstrate advanced sensor capabilities with a follow-on competitive source selection informing the LTAMDS Product Office Other Transaction Authority (OTA) award to a single vendor. In 1Q FY 2020, Raytheon was selected to deliver six (6) prototypes to support USG Developmental and Operational testing in support of Milestone C. LTAMDS entered the Major Capability Acquisition Pathway at MS C in FY25. LTAMDS Product Office will conclude an IOTE in FY 2027 which will inform a Full Rate Production decision projected for FY28.

Project EX2 — Lower Tier Air Missile Defense (LTAMD) Capability
  • Management Services
  • Product Development
  • Support
  • Test and Evaluation
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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.

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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 RTX / Raytheon 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 0604114A (President's Budget PB2027) — and FY2027 NDAA committee marks, as tracked 2026-07-27.
Suggested citation
HitchAI, "Lower Tier Air Missile Defense (LTAMD) Sensor (PE 0604114A)," federal budget intelligence, PB2027 vintage. hitchintel.com/programs/0604114A
Machine access
Markdown twin /programs/0604114A.md · MCP mcp.hitchintel.combudget_get_program_element, budget_get_cong_marks