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The Aegis Ashore deckhouse at Naval Support Facility Deveselu, Romania, under storm clouds

Program · United States

Aegis

Integrated naval combat management and weapon control system.

Updated
—Aegis Combat System

Timeline15

  1. Contract awardConfirmed

    RCA receives Aegis engineering development contract

    RCA was contracted to design and develop Aegis Mk 7 Engineering Development Model 1. This dates the contract rather than a public unveiling.

  2. MilestoneConfirmed

    Engineering model undergoes sailor-operated land test

    Sailors operated and maintained the engineering model during a two-day land-based FAST CRUISE operational test before its transfer to USS Norton Sound.

  3. MilestoneConfirmed

    Aegis engineering model intercepts drone targets at sea

    Aegis EDM-1 aboard USS Norton Sound intercepted two drone aircraft targets during its initial missile engagement. Earlier land tests prevent treating this as the first hardware test.

  4. FieldedConfirmed

    First Aegis ship enters service

    USS Ticonderoga was commissioned and deployed in 1983; no public-unveil date is established here.

  5. ExportConfirmed

    Japan joins the Aegis fleet

    Japan’s Self-Defense Forces became an Aegis operator in 1993; the source supports year precision.

  6. ExportConfirmed

    Republic of Korea joins the Aegis fleet

    South Korea joined the international Aegis fleet with the commissioning of Sejong the Great.

  7. MilestoneConfirmed

    Aegis BMD 4.0.1 completes first successful intercept

    USS Lake Erie completed the first successful live-fire intercept by the second-generation Aegis BMD 4.0.1 system with an SM-3 Block IB. The event date uses Hawaii local time.

  8. MilestoneConfirmed

    Baseline 9.C1 demonstrates integrated air and missile defense

    USS John Paul Jones used Baseline 9.C1 in the first live-fire test of Aegis IAMD Radar Priority Mode, engaging ballistic and cruise-missile targets nearly simultaneously.

  9. MilestoneConfirmed

    Aegis Ashore completes first intercept test

    The land-based Aegis test complex in Hawaii conducted its first intercept flight test. The event occurred December 9 Hawaii time; the release was published December 10.

  10. FieldedConfirmed

    Aegis Ashore enters service in Romania

    The U.S. Aegis Ashore installation in Deveselu became operational in 2016. It is a U.S. deployment hosted in Romania, not a Romanian export sale.

  11. MilestoneConfirmed

    Aegis BMD demonstrates intercept of ICBM-class test target

    USS John Finn and an SM-3 Block IIA intercepted an ICBM-representative target in the FTM-44 developmental test near Hawaii. This records a demonstration, not a declaration of operational capability.

  12. MilestoneConfirmed

    NATO announces Poland Aegis Ashore site mission-ready

    NATO announced that the U.S. Aegis Ashore site in Redzikowo was operational and available to defend the Alliance. The date records NATO’s announcement, not an inferred first operational day.

  13. MilestoneConfirmed

    Aegis Guam completes first local ballistic intercept test

    The Aegis Guam configuration participated in FEM-02, intercepting a ballistic test target. This was a developmental demonstration supporting the future Guam Defense System.

  14. MilestoneConfirmed

    Stellar Banshee demonstrates tracking and simulated engagement

    USS Pinckney tested Sea Based Terminal Increment 3 in FTX-40 against a hypersonic representative target. The engagement was simulated; this entry does not record a live intercept.

  15. MilestoneConfirmed

    Japan ASEV integration completes two live-target tracking events

    JFTX-01 events on March 17 and 19 tested SPY-7 integrated with the Aegis Weapon System. Both ended in virtual engagements; the date records completion of this two-event test.

Program and variant milestones. Dates show only the precision the sources give.

Variants1

  • SM-3 Block IIA test launch beside the Aegis Ashore test complex in Hawaii on December 10, 2018.Aegis Ashore
    Fielded

Variants of this program. Their unit costs, quantities and operating costs are in the cost table below.

Cost to the GovernmentFY2027 request $1.29B

Program totals · 4

  • Aegis BMD annual RDT&E referenceR-1 PE0603892C Aegis BMD. Annual appropriation scope, not lifetime development cost. FY2026 includes the listed reconciliation spend plan; FY2027 includes discretionary and mandatory requests where present. Shared program scope; cannot be attributed solely to this product.
    Aegis Ashore
    FY2027 R-1: Research, Development, Test & Evaluation Department of Defense Comptroller · Apr 2026 · figure FY2027 total request · PB2027
    $927.87M / yrNominal $; source budget basis
  • CBO modeled complete site acquisitionHypothetical site with launchers, interceptors and support equipment. Different scope from the deckhouse-and-radar headline; not the cost paid for either European site.
    Aegis Ashore
    Costs of a Notional National Missile Defense System (2026 testimony) Congressional Budget Office · figure CBO 2026 notional architecture
    $3.945BConstant 2026 $ · modeled
  • R&D program total1
    Source not recorded
    Not established
  • R&D program total1
    Aegis Ashore
    Source not recorded
    Not established

Unit costs · 3

  • Contract unit priceNavy contract to Lockheed Martin to produce three Aegis Weapon Systems for the 60th-62nd Arleigh Burke-class destroyers: $208.7M / 3 = $69.57M per shipset (Aegis Weapon System production only; excludes shipyard integration and missiles).
    $69.567MThen-year $ · 3 units
  • CBO modeled deckhouse + SPY-6 radarCBO Table 3 includes deckhouse and radar only. It does not price the complete site or the existing SPY-1-based European configuration. Modeled acquisition cost, not an actual contract, paid price or approved purchase.
    Aegis Ashore
    Costs of a Notional National Missile Defense System (2026 testimony) Congressional Budget Office · figure CBO 2026 notional architecture
    $650MConstant 2026 $ · modeled
  • Comparable unit priceNo comparable standalone unit price was established; package or contract totals are shown separately.
    Source not recorded
    Not established

Quantities · 4

  • European U.S. sitesRomania and Poland; excludes the Hawaii test facility. Site count, not interceptor inventory or foreign ownership.
    Aegis Ashore
    2U.S. only; stated source scope
  • U.S. inventoryA current U.S. inventory was not established. Annual procurement, cumulative deliveries and production capacity are not a stockpile count.
    Source not recorded
    Not established
  • U.S. procurement quantity2
    Source not recorded
    Not established
  • U.S. procurement quantity2
    Aegis Ashore
    Source not recorded
    Not established

Operating costs · 2

  • CBO modeled full-site annual O&SHypothetical complete site, not observed spending at Romania or Poland. Broader scope than the headline deckhouse-and-radar estimate.
    Aegis Ashore
    Costs of a Notional National Missile Defense System (2026 testimony) Congressional Budget Office · figure CBO 2026 notional architecture
    $169M / yrConstant 2026 $ · modeled
  • Annual operations & supportA complete, system-specific annual operating and support cost was not established. Procurement, replacement rounds and contract support are different measures.
    Source not recorded
    Not established

1A lifetime program R&D total was not established. Development contracts and shared program budgets are not substituted for that total.

2No comparable U.S. procurement quantity was established in this review.

Earlier observations · 4

Superseded estimates and prices, each in its original scope and dollar basis.

1R-1 PE0603892C Aegis BMD. Annual appropriation scope, not lifetime development cost. FY2026 includes the listed reconciliation spend plan; FY2027 includes discretionary and mandatory requests where present. Shared program scope; cannot be attributed solely to this product.

Budget by fiscal year
Fiscal yearAppropriationRequestEnactedQtyBudget lineSource
FY2027RDT&E$1.29B———Program Acquisition Cost by Weapon System: Fiscal Year 2027 Budget Request Office of the Under Secretary of War (Comptroller) · Apr 21, 2026
FY2026RDT&E$1.34B$886M——Program Acquisition Cost by Weapon System: Fiscal Year 2027 Budget Request Office of the Under Secretary of War (Comptroller) · Apr 21, 2026
FY2025RDT&E—$984M——Program Acquisition Cost by Weapon System: Fiscal Year 2026 Budget Request Office of the Under Secretary of War (Comptroller)

The combat system has no single universal configuration price

The award covers several ship and shore variants and multiple kinds of engineering work. It cannot be divided into a comparable shipset price, or classified entirely as R&D.

A future SPY-6 model is not an existing-site price

CBO models a new architecture with different equipment and a complete site budget. The European site count comes from Navy reporting and is kept separate from this hypothetical cost scenario.

Contracts & purchasing · 1

Ceilings, options and purchase agreements are not spending and are never added together. Obligations are under Contracts.

Contracts and purchasing
Buyer → sellerStatusValueQtySource
Missile Defense Agency → Lockheed MartinAegis BMD combat-system engineering agent: design, development, integration, sustainment and software across ships and shore variants. Maximum ordering capacity, not a system unit price.Ten-year IDIQ ceiling$2.968B—Contracts for July 1, 2025: Aegis BMD engineering agent U.S. Department of Defense · figure Jul 1, 2025
International buyers · 2
International buyers
CountryVariantQtyStatusSource
RomaniaHosts a U.S. Aegis Ashore site; not recorded as a foreign purchase of the system.Aegis Ashore1Host nation · U.S. systemAegis Ashore Poland completes first maintenance availability U.S. Navy / NAVSEA · 2024
PolandHosts a U.S. Aegis Ashore site; not recorded as a foreign purchase of the system.Aegis Ashore1Host nation · U.S. systemAegis Ashore Poland completes first maintenance availability U.S. Navy / NAVSEA · 2024

Open research: Current U.S. inventory and complete annual operating-and-support costs require additional public evidence. Buyer records are selected examples, not a complete global order book.

What the government budgets and pays for this program, from budget justification books, appropriations, acquisition reports and contract announcements. Each figure states its dollar basis. What contractors were obligated is under Contracts.

Contracts$7.62B obligated since FY2008

Contractors6

  1. Lockheed Martin$6.88B 90%
  2. RTX$415M 5.5%
  3. HII$246M 3.2%
  4. General Dynamics$81.2M 1.1%
  5. Northrop Grumman$411K 0.0%

Awards33

Obligations are signed USAspending prime-contract actions coded to this program, FY2008 to date, credited to the company that received each action. Obligations are money committed, not company revenue.

Supply Chain2

Major components and the companies that make them.