PEO STRI tests multi-domain capabilities during ‘Lexington Green’ exercise

The U.S. Army’s Program Executive Office for Simulation, Training and Instrumentation (PEO STRI) took part in the “Lexington Green” exercise at Camp Shelby, Mississippi, demonstrating electronic warfare and multi-domain operations capabilities, May 19-21.

 

PEO STRI, headquartered in Orlando, Florida, has more than 1,100 military, civilian and contractor personnel supporting Army modernization efforts by developing and sustaining multi-domain operations testing, training and information operations capabilities.

 

Lexington Green refers to a multi-day training and testing event organized by PEO STRI. The exercise focuses on electronic warfare and multi-domain operations, bringing together various Army units, organizations from the U.S. Department of Defense and testing commands to evaluate and demonstrate current and emerging capabilities within a live training environment.

 

Soldiers from the Mississippi National Guard participated alongside personnel from PEO STRI’s Project Manager Cyber Test and Training (PM CT2), Project Manager Training Devices (PM TRADE), the Army Test and Evaluation Command, the Army Operational Test Command and other DoD partners.

 

Kyle Platt, director of PEO STRI’s Instrumentation Management Office, said the exercise aimed to show how systems from PEO STRI and other DoD entities could be used together to meet training needs for electromagnetic warfare and electronic attack scenarios.

 

“Lexington Green also helped to advance EMF/EA capabilities as part of a cohesive, distributed multi-domain operations environment (MDOE),” Platt said. “To support and train the warfighter, the exercise had four specific training objectives which were threat emission detection, PACE [Primary, Alternate, Contingency and Emergency] planning, threat emitter location and targeting and indirect-fire system accuracy.”

 

The exercise focused on detecting, locating and targeting live threat emissions. PM TRADE’s Synthetic Training Environment Live Training Systems program provided MK-19 grenade launcher and 60-mm mortar simulators and the Multiple Integrated Laser Engagement System weapons system.

 

“Camp Shelby offered a unique testing ground for a collection of participating threat emitters,” Platt said. “This combined test, training and experimentation environment paves the way for future joint operations and advances EW capabilities across the armed forces.”

 

A key part of the exercise took place more than 1,000 miles away at the multi-domain operations test bed at Fort Huachuca, Arizona. There, PM CT2’s Federated System of Systems, including the eXpeditionary Live, Virtual and Constructive Command Center, Threat Battle Command Force and Intelligence Electronic Warfare Tactical Proficiency Trainer, created the operating environment.

 

Troy Bedsole, multi-domain operations team lead for PEO STRI’s Threat Systems Management Office, said the MDO test bed at Fort Huachuca played a central role in enabling distributed training during Lexington Green. A ribbon-cutting ceremony for the facility was held Sept. 12, 2024, marking it as a new capability designed to support realistic, cross-domain testing environments.

 

“The creation of the MDO test bed was the result of a collaborative effort across PEO STRI, ATEC and partners from local Ft Huachuca entities,” Bedsole said. “It was designed to serve as an enabler for testing and training and field-based risk reduction and to provide realistic MDO testing and evaluation environments and this is exactly how it was used during Lexington Green.”

 

The exercise had four test objectives: establishing electromagnetic spectrum ground truth, providing an environment to test threat emitters, enabling a distributed test and training environment and demonstrating interoperability between test and training systems.

 

“The exercise was a huge win for PEO STRI and training in an MDO environment,” Bedsole said. “Exercises like this show the willingness of Army partners to work together to leverage existing tools and ranges and developing technologies to support MDO operations across the armed forces.”