AGM-158 JASSM
General Information:
The AGM-158 Joint Air-to-Surface Standoff Missile (JASSM) is a long-range, precision-guided, stealth cruise missile developed by Lockheed Martin for use against high-value, heavily defended targets. Designed by the United States, the JASSM offers launch platforms the ability to strike from outside contested airspace using its GPS-aided INS guidance system and a terminal Imaging Infrared (IIR) seeker with Autonomous Target Recognition (ATR). This “fire-and-forget” capability allows the missile to navigate terrain, avoid threats, and identify targets independently—no further input required once launched.
The baseline JASSM-A has a range of approximately 230 nautical miles, while the extended-range AGM-158B (JASSM-ER) exceeds 500 nautical miles, enabling deep-strike capability from outside integrated air defense systems (IADS). Both variants fly at subsonic speeds, utilizing stealth shaping and radar-absorbent materials to minimize detectability. The missile carries a 1,000 lb WDU-42/B blast-fragmentation warhead, optimized for penetrating hardened targets.
JASSM is engineered to destroy heavily fortified bunkers, command and control nodes, air defense radar sites, airfields, and critical infrastructure, making it an ideal tool for Day 1 operations or shaping the battlefield for follow-on strikes. Targets are typically deeply buried or protected by dense SAM coverage, making standoff range and low observability critical. Its ability to receive pre-launch Link-16 data updates and follow waypoint-programmed routes makes it versatile for terrain masking and threat avoidance. Its survivability and effectiveness in SEAD/DEAD missions, particularly against high-value air defense sites, have made it a cornerstone of U.S. and coalition strike doctrine. In a future where contested airspace is the norm, JASSM ensures pilots don’t need to cross the WEZ fence to deal damage.
In June 2017, the United States forward-deployed over a dozen JASSMs to South Korea, assigning them to F-16 fighters as part of a regional deterrence posture.
The JASSM’s first known combat employment occurred in April 2018, when 19 JASSM-A variants were launched during a coordinated strike on Syria’s Barzah Research and Development Center, a facility associated with chemical weapons development under the Assad regime.
Later, in October 2019, the JASSM-ER variant was used in a precision strike targeting ISIS leader Abu Bakr al-Baghdadi. The missile formed part of a broader decapitation operation aimed at dismantling ISIS leadership infrastructure.
General Information:
- Origin: United States
- Manufacturer: Lockheed Martin
- Guidance Method: GPS-aided Inertial Navigation System (GPS/INS) with terminal Imaging Infrared (IIR) seeker and Autonomous Target Recognition (ATR)
- Mission: To deliver precision strikes against high-value, heavily defended targets while maintaining standoff range to ensure launch platform survivability
- Platforms: F-16 Fighting Falcon, F-15E Strike Eagle, F/A-18 Hornet, F-35 Lightning II, B-1B Lancer, B-2 Spirit, B-52 Stratofortress, Planned: B-21 Raider
- Targets:
- Hardened command and control centers
- Integrated air defense (IADS) nodes
- Bunkers
- Military infrastructure
- Strategic bridges and runways
The AGM-158 Joint Air-to-Surface Standoff Missile (JASSM) is a long-range, precision-guided, stealth cruise missile developed by Lockheed Martin for use against high-value, heavily defended targets. Designed by the United States, the JASSM offers launch platforms the ability to strike from outside contested airspace using its GPS-aided INS guidance system and a terminal Imaging Infrared (IIR) seeker with Autonomous Target Recognition (ATR). This “fire-and-forget” capability allows the missile to navigate terrain, avoid threats, and identify targets independently—no further input required once launched.
The baseline JASSM-A has a range of approximately 230 nautical miles, while the extended-range AGM-158B (JASSM-ER) exceeds 500 nautical miles, enabling deep-strike capability from outside integrated air defense systems (IADS). Both variants fly at subsonic speeds, utilizing stealth shaping and radar-absorbent materials to minimize detectability. The missile carries a 1,000 lb WDU-42/B blast-fragmentation warhead, optimized for penetrating hardened targets.
JASSM is engineered to destroy heavily fortified bunkers, command and control nodes, air defense radar sites, airfields, and critical infrastructure, making it an ideal tool for Day 1 operations or shaping the battlefield for follow-on strikes. Targets are typically deeply buried or protected by dense SAM coverage, making standoff range and low observability critical. Its ability to receive pre-launch Link-16 data updates and follow waypoint-programmed routes makes it versatile for terrain masking and threat avoidance. Its survivability and effectiveness in SEAD/DEAD missions, particularly against high-value air defense sites, have made it a cornerstone of U.S. and coalition strike doctrine. In a future where contested airspace is the norm, JASSM ensures pilots don’t need to cross the WEZ fence to deal damage.
Service History
The U.S. Air Force has procured over 2,000 AGM-158 JASSMs to date and has long-term acquisition plans for up to 10,000 units. In addition to U.S. service, the missile has been adopted or contracted by several allied nations, including Australia, Finland, the Netherlands, and Poland.In June 2017, the United States forward-deployed over a dozen JASSMs to South Korea, assigning them to F-16 fighters as part of a regional deterrence posture.
The JASSM’s first known combat employment occurred in April 2018, when 19 JASSM-A variants were launched during a coordinated strike on Syria’s Barzah Research and Development Center, a facility associated with chemical weapons development under the Assad regime.
Later, in October 2019, the JASSM-ER variant was used in a precision strike targeting ISIS leader Abu Bakr al-Baghdadi. The missile formed part of a broader decapitation operation aimed at dismantling ISIS leadership infrastructure.