Munitions

AGM-158 JASSM

Also known as
  • Joint Air-to-Surface Standoff Missile
  • JASSM
  • AGM-158A
  • JASSM Baseline
  • JASSM-BL
  • AGM-158B
  • JASSM-ER
  • AGM-158B-2
  • AGM-158B-3
  • AGM-158D
  • JASSM-D
  • JASSM-XR
  • AGM-158 XR

The AGM-158 Joint Air-to-Surface Standoff Missile is Lockheed Martin's low-observable, subsonic air-launched cruise missile family built to let bomber and fighter aircraft strike defended, high-value targets from standoff range. Its documented combat record includes baseline AGM-158A launches from B-1B bombers in the 2018 Syria missile strikes, AGM-158B use after the 2019 Baghdadi raid, reported Operation Rough Rider use against Houthi targets, and large-scale JASSM-family employment during the 2026 Iran War.

AGM-158 JASSM, Air-launched standoff cruise missile, Munitions
Image source: JASSM-ER nears operational employment

Role in Conflicts

2025 Israel-Iran Conflict
Long-Range Strike
Side
United States

During the Operation Epic Fury phase tracked by the published 2025 Israel-Iran Conflict usage page, U.S. aircraft used JASSM-family standoff missiles against Iranian targets, with CSIS citing more than 1,000 JASSMs in the first month and about 1,100 JASSM-ERs expended by the ceasefire.

Role details
Profile / Specs

Profile

Origin
United States
Type
Air-launched standoff cruise missile
Service note
2009-present service; JASSM-ER entered service in 2014
Designer
Lockheed Martin
Designed
AGM-158B extended-range variant designated in 2002
Produced
Baseline AGM-158A and AGM-158B are fielded but no longer in production; AGM-158B-2 is the current production configuration.
Developed from
AGM-158A JASSM

Specifications

Range
Greater than 500 nautical miles for JASSM-ER; Lockheed Martin describes AGM-158 XR as an extreme-standoff-range concept without giving a public numeric range on its XR page.
Warhead
1,000-pound-class hardened penetrating blast-fragmentation warhead
Guidance
GPS/INS midcourse guidance with imaging infrared terminal seeker; AGM-158B-3 adds GPS M-Code capability and a terminal sensor.
Data link
AGM-158D adds weapon data-link capability for post-launch retargeting against relocatable or higher-priority targets.
Dimensions and weight
JASSM-ER is listed at 168 inches long and 2,450 pounds in acquisition reporting.
Launch platforms
JASSM-BL/AGM-158A and JASSM-ER/AGM-158B integration is complete on B-52H, F-16 Block 40-52, B-1, B-2, and F-15E; F-35A is listed as an objective aircraft.
Flight profile
Low-observable, subsonic, autonomous standoff cruise missile
Variants

This family page covers the baseline AGM-158A and extended-range AGM-158B/B-2/B-3/D JASSM line. LRASM is cataloged separately as the AGM-158C anti-ship derivative.

VariantConfigurationDesignation notes
AGM-158A JASSM BaselineBaseline air-launched cruise missile

Air Force budget material lists AGM-158A as fielded and no longer in production.

Sources: FY 2027 Air Force Missile Procurement

AGM-158B JASSM-ERExtended-range variant

The AGM-158B is fielded and no longer in production; Lockheed Martin says JASSM-ER entered U.S. Air Force service in 2014.

Sources: FY 2027 Air Force Missile Procurement, JASSM

AGM-158B-2 JASSM-ERModernized production variant

The B-2 configuration is fielded and in production, with a new electronic fuze, GPS receiver, upgraded missile control unit, and enhanced software.

Sources: FY 2027 Air Force Missile Procurement, JASSM

AGM-158B-3 JASSM-ERDevelopment variant

The B-3 variant is in development and adds GPS M-Code capability and a terminal sensor.

Sources: FY 2027 Air Force Missile Procurement

AGM-158D JASSM-ER / JASSM-DDevelopment variant

The D variant is in development and adds weapon data-link capability for post-launch retargeting against relocatable or higher-priority targets.

Sources: FY 2027 Air Force Missile Procurement

AGM-158C LRASM, Air-launched stealth anti-ship cruise missile, MunitionsAGM-158C LRASMAnti-ship derivative

Lockheed Martin describes JASSM and LRASM as members of the AGM-158 family, while LRASM remains a separate anti-ship weapon entry.

Sources: XR - Taking Today's Cruise Missile Further

Carrier Aircraft

Air Force budget and test material documents JASSM carriage, release, or completed integration across bomber and fighter aircraft.

CarrierCarrier typeCarriage evidence
B-1B Lancer, Long-range, multi-role supersonic bomber, Aircraft & UAVsB-1B LancerLong-range bomber

Air Force reporting documents the B-1 carrying 24 AGM-158 JASSMs.

Sources: B-1 carries record-setting missile load

B-2 Spirit, Low-observable strategic heavy bomber, Aircraft & UAVsB-2 SpiritStealth bomber

Air Force budget material says JASSM-BL and JASSM-ER integration is complete on the B-2.

Sources: FY 2027 Air Force Missile Procurement

B-52 Stratofortress, Long-range heavy bomber, Aircraft & UAVsB-52 StratofortressLong-range heavy bomber

Air Force budget material says JASSM-BL and JASSM-ER integration is complete on the B-52H.

Sources: FY 2027 Air Force Missile Procurement

F-15E Strike Eagle, Dual-role strike fighter, Aircraft & UAVsF-15E Strike EagleStrike fighter

Air Force budget material says JASSM-BL and JASSM-ER integration is complete on the F-15E, and an Air Force photo caption documents an F-15E loaded with five JASSMs.

Sources: FY 2027 Air Force Missile Procurement, Project Strike Rodeo: F-15E loaded with five JASSMs

F-16 Fighting Falcon, Multirole fighter aircraft, Aircraft & UAVsF-16 Fighting FalconMultirole fighter

Air Force budget material says JASSM-BL and JASSM-ER integration is complete on F-16 Block 40-52 aircraft; Eglin reporting documents an F-16 with a JASSM-ER on an operational test sortie.

Sources: FY 2027 Air Force Missile Procurement, F-16 Fighting Falcon with JASSM-ER

Planned Integration Aircraft
Compatible itemItem typeCompatibility evidence
F-35 Lightning II, Fifth-generation stealth multirole fighter, Aircraft & UAVsF-35 Lightning IIStealth multirole fighter

The FY 2027 Air Force budget lists F-35A as an objective aircraft, and Lockheed Martin says AGM-158 strike systems are being integrated for external carriage on F-35 under Block 4.

Sources: FY 2027 Air Force Missile Procurement, LRASM Performs Flight Test in F-35 Integration Test Series

Timeline

AGM-158 JASSM Key Events

  1. JASSM enters U.S. service

    CSIS describes the AGM-158 JASSM as operational from 2009 onward, marking the missile's entry into U.S. Air Force service as a stealthy air-launched cruise missile.

    Sources: JASSM / JASSM ER

  2. JASSM-ER reaches service

    The extended-range AGM-158B JASSM-ER entered service in 2014, expanding the family into a longer-range standoff option.

    Sources: JASSM / JASSM ER

  3. First confirmed combat use in Syria

    Air Force Global Strike Command said two B-1B bombers fired 19 JASSMs during the April 2018 strike on Syrian chemical-weapons facilities.

    Sources: Significant Firepower

  4. JASSM-ER used in the Baghdadi raid

    Air & Space Forces reported that U.S. forces used AGM-158B JASSM missiles during the raid that destroyed Abu Bakr al-Baghdadi's compound in Syria.

    Sources: JASSMs Used to Level Baghdadi's Compound in Syria

  5. Lockheed Martin presents AGM-158 XR

    Lockheed Martin described AGM-158 XR as an eXtreme Range cruise-missile development stemming from JASSM-ER and LRASM.

    Sources: XR - Taking Today's Cruise Missile Further

  6. Air Force budget lists B-3 and D development status

    The FY 2027 Air Force missile procurement book lists AGM-158A, AGM-158B, and AGM-158B-2 as fielded, with AGM-158B-3 and AGM-158D still in development.

    Sources: FY 2027 Air Force Missile Procurement

Media

AGM-158 JASSM Videos

AGM-158 JASSM Images

AGM-158 JASSM, Air-launched standoff cruise missile, Munitions - view 1
Source: AGM-158 JASSM cruise missile
AGM-158 JASSM, Air-launched standoff cruise missile, Munitions - view 2
Source: JASSM-ER nears operational employment
AGM-158 JASSM, Air-launched standoff cruise missile, Munitions - view 3
Source: JASSM-ER nears operational employment
Related Weapon Systems
AGM-158C LRASM, Air-launched stealth anti-ship cruise missile, MunitionsMunitionsAGM-158C LRASMAir-launched stealth anti-ship cruise missileThe AGM-158C Long Range Anti-Ship Missile is Lockheed Martin's U.S.-built stealth anti-ship cruise missile for striking high-threat surface combatants from long range. NAVAIR describes it as an offensive anti-surface warfare air-launch solution that uses semi-autonomous guidance in contested electronic-warfare environments; official material documents operational capability on the B-1B and F/A-18E/F, later flight-science work on F-35B/C, and a 2026 B-2 live-fire sinking exercise.
AGM-179A JAGM, Air-to-surface precision-guided missile, MunitionsMunitionsAGM-179A JAGMAir-to-surface precision-guided missileThe AGM-179A Joint Air-to-Ground Missile is a U.S. air-to-surface precision munition that combines a semi-active laser and millimeter-wave seeker with Hellfire Romeo missile sections for use from AH-64E Apache and AH-1Z Viper helicopters. Its public conflict record is narrow: defense reporting has identified it as the probable missile in the January 2020 Baghdad strike that killed Qassem Soleimani, while official U.S. confirmation of the munition type remains absent.
AGM-114 Hellfire missile family, Air-to-surface missile family, MunitionsMunitionsAGM-114 Hellfire missile familyAir-to-surface missile familyThe AGM-114 Hellfire is a U.S. precision missile family developed for helicopter anti-armor missions and later adapted across UAVs, gunships, ships, and special-purpose strike roles. Cataloged combat use spans Desert Storm Apache strikes, Operation Iraqi Freedom aviation engagements, counter-ISIS and counterterrorism drone operations, Israeli helicopter fire in 2023, Ukrainian counter-drone Tempest vehicles assessed with AGM-114L Longbow missiles, and the secretive AGM-114R9X kinetic variant reported in low-collateral targeted strikes.

Related News

Sources

B-1B Lancer JASSM loadPublisher: U.S. Air Force | Note: Supports the B-1B's carriage of 24 AGM-158 JASSM missiles. | Accessed: 2026-07-04JASSMPublisher: Lockheed Martin | Note: Supports manufacturer and product-family background for JASSM, JASSM-ER, and the B-2 modernization path. | Accessed: 2026-07-04Joint Air-to-Surface Standoff Missile (JASSM) Selected Acquisition ReportPublisher: Office of the Secretary of Defense | Note: Supports JASSM-ER mission, range, warhead, variants, production, and integration background. | Accessed: 2026-07-04JASSM / JASSM ERPublisher: CSIS Missile Threat | Note: Supports 2014 War Against the Islamic State direct conflict use under Operation Inherent Resolve: Supports general JASSM/JASSM-ER background, guidance, range comparison, operator context, April 2018 U.S., UK, and French strikes in the 2011 Syrian Civil War direct use, and 2014 Operation Inherent Resolve use by stating that multiple JASSM-ER missiles were fired against Abu Bakr al-Baghdadi's hideout. | Accessed: 2026-07-04JASSM-ER nears operational employmentPublisher: U.S. Air Force | Note: Public-domain Air Force image and caption for a JASSM-ER release. | Accessed: 2026-07-04AGM-158 JASSM cruise missilePublisher: Wikimedia Commons | Note: Public-domain U.S. Air Force missile image used in the gallery. | Accessed: 2026-07-04Significant FirepowerPublisher: Air Force Global Strike Command | Note: Supports April 2018 U.S., UK, and French strikes in the 2011 Syrian Civil War direct use by documenting 19 JASSM missiles fired by two U.S. Air Force B-1B Lancers on the Barzah mission. | Accessed: 2026-07-04JASSMs Used to Level Baghdadi's Compound in SyriaPublisher: Air & Space Forces Magazine | Note: Supports 2014 War Against the Islamic State direct conflict use under Operation Inherent Resolve: Supports 2014 Operation Inherent Resolve direct use by reporting that U.S. aircraft fired multiple AGM-158B JASSM missiles to destroy Abu Bakr al-Baghdadi's Syria hideout after the raid. | Accessed: 2026-07-04Last Rounds? Status of Key Munitions at the Iran War CeasefirePublisher: Center for Strategic and International Studies | Note: Supports JASSM/JASSM-ER direct-use rows for the 2025 Israel-Iran Conflict usage page and 2026 Iran War record by reporting U.S. Operation Epic Fury missile expenditure against Iran, including more than 1,000 JASSMs in the first month and roughly 1,100 JASSM-ERs by the ceasefire. | Accessed: 2026-07-04B-52s Carrying JDAMs over Iran as US Bombers Play Growing Role in Air WarPublisher: Air & Space Forces Magazine | Note: Supports JASSM direct-use rows for the 2025 Israel-Iran Conflict usage page and 2026 Iran War record by reporting JASSM missiles used by U.S. aircraft during Operation Epic Fury against Iran and documenting B-52 JASSM carriage at RAF Fairford during the campaign. | Accessed: 2026-07-04B-1 carries record-setting missile loadPublisher: U.S. Air Force | Note: Supports B-52 carriage context for AGM-158 JASSM by stating B-52 Stratofortress aircraft can carry 12 AGM-158 JASSMs. | Accessed: 2026-07-04Project Strike Rodeo: F-15E loaded with five JASSMsPublisher: U.S. Air Force | Note: Public-domain United States Air Force image and caption showing an F-15E loaded with five JASSMs. | Accessed: 2026-07-04F-16 Fighting Falcon with JASSM-ERPublisher: U.S. Air Force | Note: Public-domain United States Air Force image and caption showing an F-16 with a JASSM-ER on an operational test sortie. | Accessed: 2026-07-04Trump operation against Houthis cost more than $1 billionPublisher: NBC News via Yahoo News | Note: Supports 2023 Red Sea Crisis direct conflict use by reporting at least 20 AGM-158 air-launched cruise missiles fired during Operation Rough Rider against the Houthis in Yemen. | Accessed: 2026-07-04Costs of United States Military Activities in the Wider Middle East Since October 7, 2023Publisher: Costs of War, Watson Institute, Brown University | Note: Supports 2023 Red Sea Crisis direct-use context by listing Operation Rough Rider munitions including at least 20 AGM-158 missiles while citing the NBC report. | Accessed: 2026-07-04FY 2027 Air Force Missile ProcurementPublisher: U.S. Air Force | Note: Supports current JASSM variant status, B-2/B-3/D capability distinctions, production context, and completed or objective aircraft integration. | Accessed: 2026-07-04XR - Taking Today's Cruise Missile FurtherPublisher: Lockheed Martin | Note: Supports AGM-158 XR and eXtreme Range naming, its relationship to JASSM-ER and LRASM, and Lockheed Martin's public AGM-158 family framing. | Accessed: 2026-07-04LRASM Performs Flight Test in F-35 Integration Test SeriesPublisher: Lockheed Martin | Note: Supports planned F-35 external-carriage integration for AGM-158 strike systems, including JASSM and LRASM. | Accessed: 2026-07-04