U.S. Army’s Maneuver Short-Range Air Defense (MSHORAD) System—SGT Stout

Background

The Army is developing a new maneuver short-range air defense system, or (M-SHORAD,) to perform short-range air defense (SHORAD). On June 14, 2024, the Army designated the M-SHORAD the "SGT Stout" in honor of Sergeant (SGT) Mitchell William Stout, an Air Defense Artillery (ADA) soldier who won the Congressional Medal of Honor during the Vietnam War. In the early 2000s, the Army divested SHORAD ADA units from Army force structure to free up personnel to create other types of units deemed more mission-critical at the time. After 2005, SHORAD force structure was reduced to two battalions of Active Component (AC) Avenger systems and Counter-Rocket, Artillery and Mortar (C-RAM) batteries and seven Army National Guard (ARNG) Avenger battalions. Since 2005, there has been a dramatic increase in air and missile platforms threatening U.S. ground forces. The use of unmanneduncrewed aerial systems (UASs) —also referred to as drones—has increased exponentially and have been used successfully in a variety of conflicts, including the current Ukrainian conflictand Iranian conflicts. Given the increase in threat and limited air defense assets available to Army divisionsunits, the Army decided to improve the air defense posture of its maneuver forces.

Initial M-SHORAD Requirement

In response to the growing aerial threat, the Army originally planned to field 144 M-SHORAD Increment 1 systems to four battalions and could field additional battalions in the future. Each. Initially, each M-SHORAD battalion wouldwas to consist of 40 M-SHORAD systems, support vehicles and equipment, and about 550 soldiers. In April 2021, the 5^th Battalion, 4^th Air Defense Artillery Regiment received the first four of its M-SHORAD systems, becoming and becamed fully equipped in late 2022. In addition to the 144 systems designated for operational units, the Army planned to procure 18 additional systems for training, operational spares, and testing, for a total of 162 systems. Reportedly, as of June 2024, the Army envisioned building about 312 M-SHORAD systems but that number could increase based on force structure decisions.

According to the Army, the following M-SHORAD units, now consisting of 36 SGT Stout vehicles per battalion, have been fielded:

• 5-4^th ADA–Germany.
• 4-60^th ADA–Fort Sill, OK.
• 6-56^th ADA–Fort Hood, TX.
• 3-4^th ADA (two thirds of unit fielded; full completion by the end of FY2026)–Fort Bragg, NC.
• Future fieldings include
• Florida Army National Guard (ARNG)–FY2028.
• Ohio ARNG–FY2029.

M-SHORAD Variants/Increments

Initially, there were three M-SHORAD variants, or "Increments," planned by the Army.

Figure 1. M-SHORAD Increment I

Source: https://www.leonardodrs.com/what-we-do/products-and-services/m-shorad/.

M-SHORAD Increment 1

M-SHORAD Increment 1 (Figure 1) was developed under the Other Transaction Authority contracting process. M-SHORAD and uses the M-11261265A1 Stryker Double V Hull combat vehicle as its chassis. The weapons and radar packages are configured by Leonardo DRS and then installed on the Stryker by General Dynamics Land Systems (GDLS), the vehicle's original manufacturer. Leonardo DRS reports the multipurpose unmanned turret includes

• two AGM-114L Longbow Hellfire missiles capable of hitting ground targets;
• fourM-SHORAD Increment 1's configuration includes eight FIM-92 Stinger missiles for aerial targets in a dual launcher (configured by Raytheon);
• an XM914 30 mm automatic cannon;
• an M-240 7.62 mm machine gun; and
• a multi-mission radar capable of tracking both ground and air targets.

Figure 2. M-SHORAD Increment 2

Source: https://www.army.mil/article/286309/de_m_shorad_inducted_into_fort_sill_museum_marking_a_new_era_in_air_defense_tactical_innovation.

M-SHORAD Increment 2

M-SHORAD Increment 2 (Figure 2) is also referred to as DE (Directed Energy) M-SHORAD and incorporates a 50 kilowatt (kW) laser as its primary armament to defend against a variety of air and artillery threats. Efforts to develop the 50 kW laser began in 2019 and, in 2021, Raytheon was awarded a $123 million developmental contract after a competitive shoot-off against Northrop Grumman. The Army reports additional testing of the 50 kW laser has enjoyed success against a variety of drones, but according to Army program officials, "challenges remain" in terms of defending against rockets, artillery, and mortars.An Army official noted "that [50-kilowatt] power level is proving challenging to incorporate into a vehicle that has to move around constantly—the heat dissipation, the amount of electronics, kind of the wear and tear of a vehicle in a tactical environment versus a fixed site." Army plans called for M-SHORAD Increment 2 to start a user assessment beginning in the fourth quarter of FY2023, and running through the first quarter of FY2024. According to the Army, after the completion of the FY2023–FY2024 user assessment, the decision was made that no further procurement efforts would be undertaken and the system would not be fielded to operational units running through the first quarter of FY2024. Reportedly, the Army now plans to choose a few designs from an existing group of vendors to compete to develop what it calls its Enduring High Energy Laser (HEL) system for short-range air defense. The Army planned to fund teams through design and development and then select a winner to build an enduring HEL in the first quarter of FY2026.

Soldier Observations on DE M-SHORAD Deployed to the Middle East for Testing

Reportedly, according to Army officials, in February 2024 the Army deployed four Stryker-mounted 50 kW laser M-SHORAD prototypes to the Middle East for soldiers to test the system's performance against aerial threats. Initial soldier feedback was characterized as "not overwhelmingly positive," with officials suggesting that "results from the lab environment and test ranges arewere very different from the tactical environment."

M-SHORAD Increment 3

The Army reportedly plans for M-SHORAD Increment 3 to build on the Increment 1 system and incorporate the FIM-92 Stinger replacement missile—the Next Generation Short Range Interceptor (NGSRI) —into the Increment 1 system. In March 2023, the Army selected Lockheed Martin and Raytheon Technologies to develop competing NGSRI prototypes. The NGSRI had its first successful test flight in late 2025, and the Army plans for continued developmental testing thorough 2026–2027 and then intends to select a single vendor in FY2028.

In addition to the NGSRI, Increment 3 is to have existing system 30 mm automatic cannons receive the Picatinny Arseanal-developed XM 1223 Multi-Mode Proximity Airburst munition (MMPA). The XM1223 is planned to be fielded in late FY2028 and is to feature a multipurpose munition that can be employed against air, ground, and personnel targets.

Army Issues a Request for Information for M-SHORAD Increment 4

On May 8, 2024, the Army issued a request for information (RFI) for M-SHORAD Increment 4, stating that this capability is to focus on delivering "air defense capability to support dismounted maneuver." M-SHORAD Increment 4 is to include capabilities that can be transported on a C-130 aircraft and that are air-droppable and sling load -capable. It is alsoWhile the Army describes Increment 4 as "vehicle agnostic and self-contained," the Army would like it to be capable of integration onto platforms such as the Joint Light Tactical Vehicle (JLTV), the Infantry Squad Vehicle (ISV), and/or a robotic vehicle. The Army requested RFI responses from industry by July 16, 2024, and plans for a Increment 4 initial operational capability by late FY2029, with the first planned fielding to units at Fort Bragg, NC. Potential and/or a robotic vehicle. The Army requested RFI responses from industry by July 16, 2024, and that industry provide solutions that would deliver capabilities in the near term (FY2027 to FY2028), mid term (FY2030 through FY2032), and the far term (beyond FY2035).

Considerations for Congress

Oversight questions Congress could consider include the following.

Lessons Learned from the Russo-Ukraine Conflict

The ongoing Ukrainian conflict has featuredand Iranian conflicts feature the use of a variety of military and commercial UASsaerial systems employed in both kinetic and non-kineticnonkinetic roles. In addition to both fixed and rotary wing air threats, loitering munitions (also known as kamikaze or suicide drones) have also been employed, reportedly with considerable effect. Lessons learned related to the employment of the aforementioned systems may inform current and future development of all four M-SHORAD Incrementsvariants. Congress may consider what efforts have been undertaken by the Army to incorporate conflict-related lessons learned into M-SHORAD design. lessons learned into M-SHORAD design.

2024 Army Force Structure Transformation Initiative and M-SHORAD

M-SHORAD and the 2025 Army Transformation Initiative (ATI)

In May 2025, Army leadership announced the Army Transformation Initiative (ATI) intended to implement "a comprehensive transformation strategy." While this announcement did not make specific references to additional M-SHORAD force structure apart from original 2024 plans, the FY2026 Army Budget Overview stated that the Army planned to "accelerate M-SHORAD procurement" and intended to invest "$2.0 billion in key air defense capabilities, including M-SHORAD ($729 million)." Given this level of FY2026 M-SHORAD investment, Congress might wish to seek further clarification from the Army on its FY2026 plans for M-SHORAD growth.