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Raytheon AGM-154 Joint Standoff Weapon

1991 PRECISION-GUIDED MUNITION STANDOFF WEAPON Air-to-surface weapons

History

The AGM-154 Joint Standoff Weapon, commonly known as JSOW, is a United States air-launched precision-guided glide weapon developed through a joint U.S. Navy and U.S. Air Force program. It was designed to let aircraft engage targets from outside many local point-defense envelopes while providing day, night and adverse-weather capability.

The JSOW family uses a common air vehicle with different payload and guidance configurations for soft area targets, armored targets, hardened fixed targets and, in the AGM-154C-1 version, moving maritime targets. Although it carries an AGM missile designation, the weapon is unpowered and obtains its standoff reach by gliding after release from an aircraft.

Raytheon became the principal contractor after acquiring the defense business that had developed the weapon. The family entered U.S. service in the late 1990s and subsequently received new warheads, improved electronics, terminal imaging-infrared guidance and network-enabled targeting functions.

Development

Development originated with the Defense Systems and Electronics division of Texas Instruments. A secondary historical account reports that the company conducted a self-funded first flight in April 1991, while Air & Space Forces Magazine lists December 1994 as the weapon's first flight. The difference appears to reflect distinct stages of the early company and formal joint-service development effort. The 1991 flight is the earliest physical flight milestone supported by the supplied material.

The U.S. Navy and U.S. Air Force subsequently pursued JSOW as a standardized medium-range precision standoff weapon. Texas Instruments sold its defense division to Raytheon in January 1997. U.S. Navy operational evaluation began in February 1997, and the weapon was deployed in January 1999 according to the U.S. Navy JSOW fact file.

Full-rate production of the JSOW family began in December 1999. Air & Space Forces Magazine records U.S. Air Force deliveries from 2000 through 2005. An enhanced electronics effort was also initiated to improve resistance to GPS spoofing and contributed to the later Block II configuration.

The AGM-154C introduced a blast, fragmentation and penetration warhead together with terminal imaging-infrared guidance for hardened fixed targets. The U.S. Navy approved the C variant for full-rate production in December 2004, and it achieved initial operational capability in February 2005.

The later AGM-154C-1 added a Link 16 weapon data link and updated seeker software. Procurement began in fiscal year 2011, and the variant achieved initial operational capability in June 2016. The Navy describes it as its first air-to-ground network-enabled weapon able to attack both stationary land targets and moving maritime targets. Domestic production of all JSOW variants ended in 2017. Operational flight testing of JSOW on the F-35C was completed in 2019, supporting continued integration of the weapon on the F-35 family.

Design

JSOW is a 1,000-pound-class air-to-surface standoff weapon built around a common box-section airframe. After release, deployable wings provide lift for an unpowered glide toward the target. The common air vehicle allows different payloads and guidance features to be incorporated while retaining broadly similar external dimensions.

Guidance

The baseline guidance system combines the Global Positioning System with an inertial navigation system. This GPS/INS arrangement provides navigation toward a preplanned target and supports day, night and adverse-weather employment.

The AGM-154C adds an uncooled long-wave imaging-infrared seeker with autonomous target-acquisition algorithms for terminal guidance. This seeker is intended to improve precision against fixed-point targets, including hardened tactical objectives.

The AGM-154C-1 combines GPS/INS navigation and the terminal imaging-infrared seeker with a Link 16 weapon data link. Updated seeker algorithms and the data link provide the C-1 with the ability to engage moving or relocatable targets at sea while retaining its capability against stationary land targets. The Naval Air Systems Command identifies the C-1 as the latest JSOW configuration in the supplied material.

Warheads

The AGM-154A carries 145 BLU-97 combined-effects submunitions. It was developed for fixed and relocatable soft targets such as parked aircraft, trucks, armored personnel carriers and surface-to-air missile sites.

The AGM-154A-1 was developed for Foreign Military Sales and replaces the BLU-97 submunition payload with a 500-pound BLU-111 warhead while retaining the basic JSOW-A configuration.

The AGM-154B development configuration used six BLU-108B/B canisters. Each canister was intended to dispense four anti-armor submunitions for use against mobile area targets such as tanks, self-propelled artillery and other armored vehicles. Development was completed, but production was deferred.

The AGM-154C and AGM-154C-1 use the BROACH multi-stage warhead. The C configuration was designed to produce blast, fragmentation and penetration effects against industrial facilities, logistical systems and hardened tactical targets.

Aircraft integration

The U.S. Navy lists integration of JSOW family variants on aircraft including the F/A-18C/D, F/A-18E/F and F-35C, while NAVAIR also lists the AV-8B and F-35B among platforms for the earlier JSOW configurations. U.S. Air Force integration listed in the supplied sources includes the F-16 Block 40/50, B-1, B-2, B-52, F-15, F-117, A-10 and F-35A. The more specialized AGM-154C-1 is listed for the F/A-18E/F and F-35A/C.

Operational history

A secondary historical account states that the first combat employment of JSOW occurred on 17 December 1998 during Operation Desert Fox, when an F/A-18C released the weapon against a target in southern Iraq. That account also associates JSOW combat use with Operation Southern Watch, Operation Allied Force, Operation Enduring Freedom and Operation Iraqi Freedom. The secondary historical summary is consistent with the broader operational record described by official sources, although exact mission details are not independently confirmed by the supplied primary-source excerpts.

The U.S. Navy states that AGM-154A weapons were employed by Navy F/A-18 aircraft in Afghanistan during Operation Enduring Freedom and in Iraq during Operation Iraqi Freedom. The Navy also reports that more than 400 AGM-154A weapons have been used in combat.

On 1 September 2026, U.S. Central Command announced another wave of strikes against Iranian military infrastructure. Accompanying imagery showed an F/A-18E Super Hornet from USS George H.W. Bush carrying a large air-to-surface weapon assessed in the supplied source as probably an AGM-154C-1. The identification was based on external configuration and compatibility with the aircraft, but CENTCOM did not officially identify the weapon or confirm that it was released during the strikes. The event therefore provides evidence of probable carriage rather than confirmed AGM-154C-1 combat employment in that operation.

Variants

AGM-154A: Baseline JSOW configuration carrying 145 BLU-97 combined-effects submunitions for fixed and relocatable soft area targets.
AGM-154A-1: Foreign Military Sales configuration based on JSOW-A but fitted with a 500-pound BLU-111 warhead instead of BLU-97 submunitions.
AGM-154B: Anti-armor development configuration using six BLU-108B/B canisters, each intended to dispense four anti-armor submunitions. Development was completed, but production was deferred.
AGM-154C: Variant for hardened and fixed-point targets, fitted with the BROACH multi-stage warhead and an imaging-infrared terminal seeker. It achieved initial operational capability in February 2005.
AGM-154C-1: Network-enabled development of the C variant with Link 16, GPS/INS guidance, terminal imaging-infrared seeker and updated software for moving maritime as well as stationary land targets. It achieved initial operational capability in June 2016.

Operators

United States: The U.S. Navy and U.S. Air Force have operated JSOW family weapons. The Navy has used the AGM-154A in combat and introduced the AGM-154C and network-enabled AGM-154C-1. U.S. aircraft integration spans multiple fighter and bomber types.