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from https://www.navalnews.com/naval-news/2024/06/u-s-army-conducts-first-anti-ship-ballistic-missile-sinkex-using-prsm/

On June 16, 2024 3d Multi-Domain Task Force and 1-181 Field Artillery
Regiment of the Tennessee National Guard employed the U.S. Army
Autonomous Multi-Domain Launcher (AML) and two Precision Strike Missiles
(PrSM) as part of the Valiant Shield 24 Combined Joint SINKEX. The AML
and PrSMs engaged a maritime target alongside other joint assets during
the SINKEX. The VS24 SINKEX is the first employment of both the AML and
the PrSM outside of the U.S and is a significant milestone in the U.S.
Army’s continuing development of long-range fires capabilities. (Sgt.
Perla Alfaro)

U.S. Army Conducts First Anti-Ship Ballistic Missile SINKEX Using PrSM
The U.S. Army successfully used two Precision Strike Missiles (PrSM)
against a moving target at sea. The event, which marked a first, took
place during the Valiant Shield 24 SINKEX.
Naval News Staff 23 Jun 2024

Support was provided from high-altitude balloons and 'Vanilla' UAS
providing communications relay over 27 hours even through severe weather.

U.S. Army press release

FORT SHAFTER, HAWAII – 3d Multi-Domain Task Force (3MDTF) continued to demonstrate its ability to operate in the INDOPACOM theater through its participation, experimentation, and innovation in Valiant Shield 24.
3MDTF deployed teams of soldiers across the Pacific while executing
distributed command and control and employing emerging concepts and capabilities partnered with Department of Defense agencies and
commercial industry.

Teams operating out of Japan, Guam, and Palau integrated extended range sensing, long range communication, effects, and fires to contribute to accomplishing training objectives.

In Guam, 3MDTF soldiers, partnering with the Research and
Experimentation branch of the Office of the Undersecretary of Defense
(OUSD) and Aerostar Industries, launched high altitude balloons (HABs)
from Won Pat International Airport. Once launched, the HABs rapidly
ascended above 50,000 feet and began operating around the Marianas
Islands. Equipped with electromagnetic sensing and mesh communications equipment, the HABs helped inform future maritime domain awareness
innovation and experimentation.

While HABs floated at high altitude, Platform Aerospace, partnering with
OUSD (R&E) and 3MDTF, launched the Vanilla Ultra-Long Endurance Unmanned Aircraft System (UAS) Vanilla holds the world record for continuous, un-refueled flight of a combustion engine aircraft (>8 days). Vanilla
can be configured for Intelligence, Surveillance, and Reconnaissance
(ISR), and Persistent Communications.

For Valiant Shield 24, Vanilla performed as a communication relay,
operating effectively during a 27-hour flight. Vanilla’s launch and
flight, including multiple hours of flight during a violent storm,
validated operational use of an Ultra-Long Endurance UAS capable of
multi-day, multi-mission configurations.

Vanilla is an OUSD Rapid Defense Experimentation Reserve (RDER) Program; Valiant Shield 24 was Vanilla’s graduation event and formal Technology Readiness Level (TRL) 8 assessment.

PrSM U.S. Army Autonomous Multi-Domain Launcher MDL
The U.S. Army Combat Capabilities Development Command Aviation & Missile
Center and Ground Vehicle Systems Center’s combined Autonomous
Multi-domain Launcher team conducted a successful live fire of a Reduced
Range Practice Rocket fired from the AML at Yuma Proving Ground in
April. (Photo Credit: Army photo)
In Palau, hundreds of miles away, soldiers from 3MDTF and 1-181
Artillery Regiment of the Tennessee National Guard participated in the
VS24 Combined Joint Live Fire SINKEX on June 16, 2024, utilizing the
U.S. Army Autonomous Multi-Domain Launcher (AML) and two Precision
Strike Missiles (PrSM). During the SINKEX, the AML was able to engage a
moving maritime target in conjunction with other Joint assets. The VS24
SINKEX is the first employment of both the AML and the PrSM outside of
the U.S and is a significant milestone in the Army’s development of long-range fires capabilities.

The prototype launcher will be capable of convoy operations, autonomous
way point navigation, tele-operation, and remote launcher turret and
fire control operation.

PrSM is the Army’s next-generation Long Range Precision Fires weapon and
is capable of neutralizing targets at standoffs greater than 400 kilometers.

To bring together the soldiers and capabilities spread thousands of
miles throughout the Pacific, the3MDTF All-Domain Operations Center
(ADOC) on Oahu, and a Battalion command in Japan were established. These operations centers provided the hub for synchronized planning and
execution during the exercise.

VS24 provides 3MDTF an invaluable ability to train alongside partners
and allies. Col. Michael Rose, the 3MDTF Commander commented, “Valiant
Shield enabled us to integrate with the Combined Joint Force and operate distributed while forward in theater. We were able to build new
relationships and continue to deepen existing ties. Valiant Shield and
like exercises in the region enables us to test our systems and
processes as well as integrate new capabilities alongside our partners
and allies, contributing to the continuous transformation of our
multi-domain capability and increasing our warfighting readiness.”

VS24 is a multinational, biennial field training exercise focused on integrating interoperability training in a multi-domain environment.
This training builds real-world proficiency in sustaining joint forces
through detecting, locating, tracking, and engaging units at sea, in the
air, in space, on land, and in cyberspace in response to a range of
mission areas. VS24 is the 10th iteration of the Valiant Shield exercise
which first began in 2006.

-End-

PrSM Precision Strike Missile
Screen capture from a Lockheed Martin video showing the main components
of the PrSM.
Naval News comments:

The decommissioned hulk of the Austin-class amphibious transport dock
ex-USS Cleveland (LPD-7) was the target ship for this SINKEX.

The Lockheed Martin PrSM has an objective range of 60 to 650 kilometers
(37 to 403 miles). It is a surface-to-surface, all-weather,
precision-strike guided missile, fired from both the M270A1 Multiple
Launch Rocket System (MLRS) and M142 High-Mobility Artillery Rocket
System (HIMARS). As the replacement for the MGM-140 Army Tactical
Missile System (ATACMS), PrSM doubles ATACMS’ current rate-of-fire with
two missiles per launch pod. It is designed to attack threat air defense systems, missile launchers, command and control (C2) nodes, troop assembly/staging areas and high-payoff targets throughout the
battlefield at ranges of more than 500 kilometers.

A multi-mode seeker is used for engaging moving land and maritime
targets. Future Increments of PrSM will include:

Multi-domain operations capability to engage moving land and maritime
targets;
Enhanced lethality payloads capable of autonomously and collaboratively detecting, targeting, and striking high payoff targets that are moving,
have moved, poorly located, or dispersed;
Extended range capability enabled through air-breathing ramjet propulsion.
TAGS Ballistic Missile Indo-Pacific PRSM
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