AN/SPY-1
FieldedSensor
SPY-1-equipped Aegis configurations; later radar variants differ.
Link Confirmed
Other · Sea
Aegis Combat System
Integrated naval combat management and weapon control system.
by Lockheed Martin · First fielded 1983
FieldedOtherSeaMilestoneMar 19, 2026
- Milestones15
- Operators—
- Components3
- Programs—
- Capabilities—
- Inputs—
Milestones19692026
Timeline15
- ExportConfirmed
Republic of Korea joins the Aegis fleet
South Korea joined the international Aegis fleet with the commissioning of Sejong the Great.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
The latest 10 milestones. Solid entries are confirmed, outlined reported, dashed estimated or still to come; dotted italic entries are speculative. Dates show only the precision the sources give.
In Service
- First fielded
- 1983
Cost to the Government
Weapon systems · Lockheed Martin
Aegis Combat System
Aegis BMD engineering and support contracts cover a subset of the wider combat system and multiple configurations.
Comparable unit price
Not verified
No comparable standalone unit price was established; package or contract totals are shown separately.
U.S. inventory
Not verified
A current U.S. inventory was not established. Annual procurement, cumulative deliveries and production capacity are not a stockpile count.
U.S. procurement quantity
Not verified
No comparable U.S. procurement quantity was established in this review.
R&D program total
Not verified
A lifetime program R&D total was not established. Development contracts and shared program budgets are not substituted for that total.
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.
Operations & sustainment
Annual operations & support
Not verified
A complete, system-specific annual operating and support cost was not established. Procurement, replacement rounds and contract support are different measures.
Cost over time · 1 observations
Each row retains its original scope and dollar basis. Changing quantities, service life and inflation can change the estimate without changing the price of building one unit.
| Observation | Measure | Amount | Dollar basis | Evidence |
|---|---|---|---|---|
| 2025-07-01 | Aegis BMD engineering contract ceiling Ten-year mixed engineering and sustainment scope; not lifetime R&D or obligated spending. | $2.968B | Nominal USD; source budget basis | U.S. Department of Defense ↗ |
Contracts & purchasing · 1 records
Award values, ceilings and purchase agreements have different meanings. These records are not added together as total spending.
2025-07-01 · Ten-year IDIQ ceiling
Missile Defense Agency → Lockheed Martin
$2.968B · quantity not established
Aegis BMD combat-system engineering agent: design, development, integration, sustainment and software across ships and shore variants. Maximum ordering capacity, not a system unit price.
U.S. Department of Defense ↗
Connected missiles & systems
Combat system and interceptor
Standard Missile-3 (SM-3) →Aegis BMD integrates ballistic-missile defense; this is a program relationship, not a shared unit-price denominator.
DoD Comptroller ↗Planned interceptor integration
Glide Phase Interceptor (GPI)
Manufacturer describes intended Aegis integration; this is a development relationship, not fielded inventory.
Northrop Grumman ↗Radar and combat system
AN/SPY-6 Radar Family →SAR describes Aegis Baseline 10 integration; the radar is not the whole combat system.
U.S. Navy / DoD ↗
International buyers
No international purchase documented in this review.
Coverage & 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.
- Contract unit priceEstimated$69.6MEstimate / observation: 2005-01-31 · Then-year $ · 3 units
Navy 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).
Source
| Fiscal year | Appropriation | Request | Enacted | Qty | Budget line | Source |
|---|---|---|---|---|---|---|
| FY2027 | RDT&E | $1.29B | — | — | — | SourceConfirmed |
| FY2026 | RDT&E | $1.34B | $886M | — | — | SourceConfirmed |
| FY2025 | RDT&E | — | $984M | — | — | SourceConfirmed |
Unit costs and contract unit prices for this system, and budget figures for the programs that buy it. Each figure states its dollar basis and links its source; contract values are under Programs & awards.
Built With2
Mk 41 Vertical Launching System
FieldedComponentMk 41-equipped shipboard Aegis configurations.
Link Confirmed
Used In1
Arleigh Burke-class destroyer
FieldedVesselIntegrated combat system; baseline depends on ship and modernization status.
Link Confirmed