The US missile defense system fields 44 ground-based interceptors, 13 AN/TPY-2 radars, and a planned 63 BMD-capable Aegis ships, but the Iran war cut Patriot stocks from about 2,330 to roughly 759–827 and THAAD stocks from 452 to about 239–257 by July 27, 2026. The Pentagon asked for $17.5 billion for Golden Dome in fiscal 2027, against a Congressional Budget Office estimate of $1.2 trillion over 20 years.
US Missile Defense System 2026
US Missile Defense System describe a shield that works best against a few missiles and now faces a supply problem. The homeland layer, built around 44 ground-based interceptors in Alaska and California, was designed to stop a limited ICBM attack. The regional layer, built from Patriot, THAAD, Aegis ships, and forward radars, did the heavy lifting in the war with Iran that began in late February 2026. That war used up interceptors faster than industry can build them.
This report covers the interceptors, the radar and sensor networks, the Aegis fleet, current stockpile estimates, production plans, and the Golden Dome budget. Stockpile figures are public estimates, because the Pentagon does not publish inventory counts. Estimates differ by source, and the report flags every place where they conflict.
Interesting Facts About the US Missile Defense System 2026
| Fact | Data (Period) |
|---|---|
| Ground-based interceptors (GBIs) | 44 (40 Fort Greely, Alaska; 4 Vandenberg, California) |
| AN/TPY-2 radars supported by MDA | 13 (5 forward-based, 8 THAAD terminal mode) |
| BMD-capable Aegis ships | 63 planned by end of FY2026 (requirement: 54) |
| Patriot interceptors, pre-war vs July 27, 2026 | About 2,330 vs 759–827 (CSIS estimate) |
| THAAD interceptors, pre-war vs July 27, 2026 | 452 vs 239–257 (CSIS estimate) |
| PAC-3 MSE production | 600–650 per year now, 2,000 per year targeted |
| THAAD production | 96 per year now, 400 per year targeted |
| Golden Dome FY2027 request | $17.5 billion |
| Golden Dome 20-year cost (CBO) | $1.2 trillion |
| MDA SHIELD contract ceiling | $151 billion over 10 years |
Every stockpile number in this table is an estimate from the Center for Strategic and International Studies, built from public records. A CNN report on August 4 cited sources who said the military had used nearly 80% of its THAAD inventory, well above the CSIS range of 43% to 47%. Both figures say the same thing: THAAD, the interceptor built for the most dangerous missiles, is scarce.
The table also shows the gap between plan and capacity. The Pentagon wants 2,000 Patriot interceptors and 400 THAAD interceptors a year. Current output is about 650 and 96. A budget request can happen in a day. A factory ramp takes years, and the stockpile will stay thin while the ramp runs.
US Homeland Ground-Based Midcourse Defense Statistics 2026
GBI fleet by kill vehicle type
CE-I kill vehicle ██████████████████████████████ 20
CE-II kill vehicle ██████████████████████ 16
CE-II Block 1 kill vehicle ██████████████ 8
| Metric | Value |
|---|---|
| Total GBIs deployed | 44 |
| GBIs at Fort Greely, Alaska | 40 |
| GBIs at Vandenberg, California | 4 |
| Fleet with CE-I kill vehicle | 20 |
| Fleet with CE-II kill vehicle | 16 |
| Fleet with CE-II Block 1 kill vehicle | 8 |
| Next Generation Interceptor contract | $17 billion to Lockheed Martin (April 2024) |
| NGI fielding deadline | No later than the end of 2028 |
| Planned NGI count | 20 |
| NGI cost per interceptor | At least $74 million |
| Congress-mandated third GMD site | East Coast, by 2031 |
Data source: Missile Defense Agency; Arms Control Association Missile Defense Fact Sheet (kill vehicle mix as of 2020); Lieutenant General Heath Collins, MDA Director, Senate Armed Services testimony.
The GMD fleet has held at 44 interceptors since the 44th went into its silo at Fort Greely in November 2017. Only 8 of the 44 carry the newest CE-II Block 1 kill vehicle, and 20 still carry the oldest CE-I design. MDA is running a service life extension program to keep the older units reliable until the Next Generation Interceptor arrives. The $17 billion NGI contract replaces the cancelled Redesigned Kill Vehicle effort, and each new interceptor carries a unit cost of at least $74 million.
Capacity matters more than count. The GMD system was built to counter a limited ICBM attack from a state such as North Korea, and military planners fire several interceptors at each incoming warhead. Forty-four interceptors cannot stop a large salvo from Russia or China, and no US official claims they can. The planned 20 NGIs and a third East Coast site would add capacity, though the 2031 site date stays years away.
US Missile Defense Radar Networks & Early Warning Sensors 2026
AN/TPY-2 radars supported by MDA
Forward-based mode (fixed sites) ████████████████ 5
THAAD terminal mode ████████████████████████ 8| Sensor | Key Data |
|---|---|
| AN/TPY-2 radars (total) | 13 (5 forward-based, 8 THAAD terminal mode) |
| AN/TPY-2 terminal-mode radars stationed overseas | 2 of the 8 |
| Upgraded Early Warning Radar (UEWR) range | About 3,000 miles |
| UEWR sites | California, Massachusetts, Alaska, the United Kingdom, and Greenland |
| Long Range Discrimination Radar (LRDR) range | About 2,500 miles, Clear, Alaska |
| LRDR first ICBM-representative track | June 2025 |
| SDA tracking satellites funded | 36 ($1.75 billion in awards) |
| Expected launch of those 36 satellites | By the end of 2028 |
| FY2027 launches funded | 31 (9 Space Development Agency, 22 National Security Space Launch) |
Data source: Missile Defense Agency FY2026 Budget Estimates (June 2025); U.S. Space Force and Space Development Agency announcements; DefenseScoop reporting (August 12, 2026); The Defense Post (October 2025).
Radars give the system its eyes, and MDA supports 13 AN/TPY-2 sets. Five of them sit at fixed forward sites and run around the clock. Eight operate with THAAD batteries in terminal mode, and two of those eight are stationed permanently outside the continental US. The UEWR network sees about 3,000 miles, and the LRDR at Clear sees about 2,500 miles with the discrimination needed to separate warheads from decoys. LRDR tracked an ICBM-representative target for the first time in June 2025.
Satellites fill the gaps between radar coverage. The Space Development Agency awarded $1.75 billion for 36 more missile warning and tracking satellites, due in orbit by the end of 2028. The FY2027 budget funds 31 launches, 9 for SDA and 22 for national security missions. Next-Generation OPIR is replacing the older SBIRS infrared constellation by the end of the decade. Sensors are the part of the architecture where Congress and the Pentagon agree most.
US Aegis Ballistic Missile Defense Fleet Statistics 2026
BMD-capable Aegis ships, count (scale: 63 = 40 blocks)
December 2023 ███████████████████████████████ 49
End of FY2025 (planned) ████████████████████████████████████ 56
Navy requirement ██████████████████████████████████ 54
End of FY2026 (planned) ████████████████████████████████████████ 63
| Metric | Value (Period) |
|---|---|
| BMD-capable Aegis ships | 49 (December 2023) |
| BMD-capable Aegis ships, FY2025 plan | 56 |
| BMD-capable Aegis ships, FY2026 plan | 63 |
| Navy requirement for BMD-capable ships | 54 (2016 Force Structure Assessment) |
| Total Aegis combatants | 83 (7 cruisers, 76 destroyers, 2025) |
| Ships on BMD patrol at once (Navy statement) | 6 |
| Ships in the deployment cycle behind each deployed ship | 18 |
| FY2027 SM-3 Block IB request | 78 |
| FY2027 SM-3 Block IIA request | 136 |
| FY2027 SM-6 request | 540 |
Data source: Congressional Research Service, Navy Aegis Ballistic Missile Defense Program (RL33745, January 2026); Missile Defense Agency FY2026 Budget Estimates; Center for Strategic and International Studies analysis of the FY2027 request.
The Aegis fleet grew from 49 BMD-capable ships in December 2023 to a planned 63 by the end of FY2026, above the Navy’s own requirement of 54. Those ships operate in European waters, the Western Pacific, and the Persian Gulf. The Navy has said that for every ship on station, about 18 more sit in training, maintenance, or transit. A fleet of 63 therefore keeps only a small number of ships on patrol at any moment.
The ships are only as useful as their missiles. The FY2027 request asks for 78 SM-3 Block IBs, 136 SM-3 Block IIAs, and 540 SM-6 missiles. CSIS estimates the Navy’s SM-3 stock at 414 missiles in December 2025, before the war. Naval missiles were used less heavily than Patriot and THAAD, and CSIS expects SM stocks to recover in about 2 years.
US Missile Interceptor Stockpile Statistics 2026
US interceptor inventory estimates, July 27, 2026 vs pre-war
Patriot, pre-war (Feb 27) ██████████████████████████ 2,330
Patriot, July 27 (midpoint) ████████████ 759–827
THAAD, pre-war (Feb 27) ████████ 452
THAAD, July 27 (midpoint) ████ 239–257| Interceptor | Pre-War (Feb 27, 2026) | July 27, 2026 | Decline |
|---|---|---|---|
| Patriot (PAC-3 and GEM-T class) | About 2,330 | 759–827 | About two-thirds |
| THAAD | 452 | 239–257 | 43.1% to 47.1% |
| Combined Patriot and THAAD loss | n/a | About 1,700 missiles | n/a |
| THAAD per CNN sources (August 4) | n/a | Nearly 80% of inventory used | n/a |
| CBO estimate of total interceptors used since June 2025 | n/a | Half to two-thirds | n/a |
| THAAD used in the June 2025 Twelve-Day War | 150+ | About 30% of stock | n/a |
Data source: Center for Strategic and International Studies Missile Defense Project estimates as compiled by Visual Capitalist (July 27, 2026); CNN (August 4, 2026); Congressional Budget Office; Military Times (March 2026).
The war with Iran, which began in late February 2026, cut Patriot stocks by about two-thirds and THAAD stocks by nearly half in five months, according to CSIS estimates. Combined, the military expended about 1,700 interceptors. Analysts warned in March that if the US kept using interceptors at the Twelve-Day War rate, it would burn through half its stock in four to five weeks. The actual decline ran slower, spread over five months, but it still reached two-thirds of Patriot stocks.
Sources disagree on THAAD. CNN’s sources put the loss at nearly 80%, while the public CSIS range is 43% to 47%. The difference likely comes from baselines: CSIS cited 534 THAAD interceptors in December 2025 and 452 just before the war. CBO’s range of half to two-thirds of all interceptors used since June 2025 sits between the two. Treat every figure as an estimate until the Pentagon publishes inventory data, which it has declined to do.
US Interceptor Production & Replenishment Statistics 2026
Annual interceptor production, current vs target
PAC-3 MSE, current █████████████ 650
PAC-3 MSE, target ████████████████████████████████ 2,000
THAAD, current ██ 96
THAAD, target ████████ 400
| Metric | Value (Period) |
|---|---|
| PAC-3 MSE production now | 600–650 per year (about half to US) |
| PAC-3 MSE target | 2,000 per year (7-year ramp) |
| THAAD production now | 96 per year |
| THAAD target | 400 per year |
| Cost per THAAD interceptor | $12.7–15.5 million |
| Cost per PAC-3 MSE | $3.7–4.7 million |
| Cost per SM-3 Block IIA | $24–28 million |
| Framework agreements (August 3, 2026) | Over $3 billion with Lockheed Martin and Northrop Grumman |
| Pentagon interceptor procurement goal | Nearly 14,000 |
| CBO cost to replace munitions used through August 1 | $21.7 billion ($13.1 billion for interceptors) |
| Army commitment to speed production (April 2026) | $4.7 billion |
| Time to restore THAAD, Patriot, and Tomahawk stocks | 3+ years (CSIS) |
Data source: Center for Strategic and International Studies, Rebuilding U.S. Missile Inventory; Defense News (August 3, 2026); Congressional Budget Office; Army Recognition and Military Machine reporting, 2026.
Production is the bottleneck. PAC-3 MSE output of 600 to 650 per year would need to triple to reach the 2,000 target, and THAAD output of 96 would need to quadruple to 400. The August 3 framework agreements, worth over $3 billion, aim to add a second source for PAC-3 rocket motors and to expand THAAD seeker, shell, and ignition capacity. Officials name solid rocket motors, explosives, propellant, and skilled labor as the constraints, and money alone cannot fix them quickly.
Cost shapes the math. A THAAD interceptor costs $12.7 to $15.5 million and a PAC-3 costs $3.7 to $4.7 million, so replacing 1,000 THAADs at the target rate takes about 30 months. CBO puts the cost of replacing munitions used through August 1 at $21.7 billion, with $13.1 billion for interceptors. That bill lands while the Treasury borrows at high rates, and readers can check where those rates stand in US 10 year treasury yield statistics.
Golden Dome Missile Defense Statistics 2026
Golden Dome cost figures, billions of dollars
FY2027 request █ $17.5B
DoD five-year account plan ███ $79B
White House original estimate ██████ $175B
CBO 20-year estimate ████████████████████████████ $1,200B| Metric | Value |
|---|---|
| White House original estimate (2025) | $175 billion |
| DoD five-year account plan | $79 billion |
| CBO full-architecture estimate (May 2026) | $1.2 trillion over 20 years |
| Space-based interceptors (CBO) | About $730 billion, roughly 7,800 satellites |
| FY2027 Golden Dome request | $17.5 billion ($17.1 billion reconciliation, $398 million discretionary) |
| Initial funding in the 2025 reconciliation law | About $25 billion |
| Space-based interceptor prototype funding | $3.2 billion |
| MDA SHIELD contract | $151 billion ceiling, 10 years (December 2025 to December 2035) |
| Trump’s stated operational date | Before early 2029 |
Data source: Congressional Budget Office; Department of Defense FY2027 budget request; Taxpayers for Common Sense; Federal Budget IQ; Aerospace America, 2026.
Golden Dome is the largest missile defense plan since the Strategic Defense Initiative, and its price tag has no agreed number. The White House cited $175 billion, the Pentagon’s five-year account plan holds $79 billion, and CBO’s May 2026 estimate for the full architecture is $1.2 trillion over 20 years. About $730 billion of that comes from space-based interceptors. CBO says the system would need roughly 7,800 satellites to engage a handful of simultaneous ICBMs, and each satellite lasts about five years. Readers who want the orbital side of the program can see space weapons statistics in the US.
Funding is the near-term risk. The FY2027 request asks for $17.5 billion, and $17.1 billion of it depends on a reconciliation bill that Congress has not scheduled. Gen. Michael Guetlein, who leads the program, said on August 12 that without a funding path, “there is no Golden Dome.” The $151 billion SHIELD contract gives MDA a vehicle to buy capabilities, but a ceiling is not a budget. Watch the reconciliation vote, because it decides whether the program grows or stalls.
US Missile Defense Budget & Debt Context 2026
Missile defense funding figures, billions of dollars
FY2027 Golden Dome request █████████ $17.5B
CBO munitions replacement bill ███████████ $21.7B
2025 reconciliation, initial █████████████ $25B
DoD Golden Dome five-year plan ████████████████████████████████████████ $79B
| Metric | Value (Period) |
|---|---|
| FY2027 defense budget request | $1.5 trillion ($1.15 trillion base plus $350 billion reconciliation) |
| Space Force FY2027 request | $71.1 billion |
| Golden Dome FY2027 request | $17.5 billion |
| CBO munitions replacement cost (through August 1) | $21.7 billion |
| US national debt (September 8, 2026) | $40.08 trillion |
| 10-year Treasury yield (September 10, 2026) | 4.97% |
| Reconciliation share of FY2027 Golden Dome request | About 98% |
Data source: Breaking Defense (April 2026); U.S. Department of the Treasury, Debt to the Penny; Federal Reserve H.15 release; Congressional Budget Office; Pentagon FY2027 budget documents.
The FY2027 request of $1.5 trillion, the largest defense request in history, depends on $350 billion from a reconciliation bill. Golden Dome’s $17.5 billion rides on the same bill, and 98% of it sits outside normal appropriations. Missile defense competes with every other priority for those dollars, and the interceptor replacement bill alone adds $21.7 billion. Congress has shown little appetite for a second reconciliation package, which leaves a large share of the plan unfunded.
The borrowing backdrop adds pressure. National debt stood at $40.08 trillion on September 8, 2026, and the 10-year yield reached 4.97% two days later. Each added interceptor or satellite adds to a debt that costs more to carry. For readers tracking how rising debt has affected the country’s credit standing, US credit rating history statistics covers past downgrades and what drove them.
Frequently Asked Questions About US Missile Defense System 2026
How many ground-based interceptors does the US have?
The US has 44 ground-based interceptors: 40 at Fort Greely, Alaska and 4 at Vandenberg, California. A new Next Generation Interceptor is due by the end of 2028.
How many missile defense radars does the US operate?
MDA supports 13 AN/TPY-2 radars: 5 forward-based and 8 in THAAD terminal mode. Upgraded Early Warning Radars and the Long Range Discrimination Radar in Alaska add long-range tracking.
How many BMD-capable Aegis ships does the Navy have?
The Navy planned 63 BMD-capable Aegis ships by the end of FY2026, up from 49 in December 2023. The Navy’s requirement is 54.
How many Patriot interceptors does the US have left?
CSIS estimated 759 to 827 as of July 27, 2026, down from about 2,330 before the Iran war began in late February.
How many THAAD interceptors does the US have left?
CSIS estimated 239 to 257, down from 452 before the war. CNN sources put the loss nearer 80%, so the true number may be lower.
How fast is the US building new interceptors?
PAC-3 MSE production runs about 600 to 650 per year against a target of 2,000. THAAD production runs 96 per year against a target of 400.
How much does a THAAD interceptor cost?
A THAAD interceptor costs $12.7 million to $15.5 million. A PAC-3 MSE costs $3.7 million to $4.7 million.
How much will Golden Dome cost?
CBO estimated $1.2 trillion over 20 years in May 2026. The White House originally said $175 billion, and the Pentagon’s five-year account plan holds $79 billion.
How much did the Pentagon request for Golden Dome in fiscal 2027?
The request is $17.5 billion, with $17.1 billion coming from a planned reconciliation bill and $398 million from regular appropriations.
What is the SHIELD contract?
SHIELD is an MDA contract vehicle worth up to $151 billion over 10 years, from December 2025 to December 2035, meant to support Golden Dome.
How long will it take to rebuild interceptor stocks?
CSIS says Patriot, THAAD, and Tomahawk stocks will take 3 or more years to return to pre-war levels. Standard Missiles (SM-3 and SM-6) should take about 2 years.
Can the US missile defense system stop a large ICBM attack?
No. The 44-interceptor GMD system was built for a limited attack, and Golden Dome is meant to extend that capacity. It remains an in-development program as of October 2026.
Disclaimer: The data research report we present here is based on information found from various sources. We are not liable for any financial loss, errors, or damages of any kind that may result from the use of the information herein. We acknowledge that though we try to report accurately, we cannot verify the absolute facts of everything that has been represented.
