Signed Memorandum of Understanding (MOU) establishes a framework for evaluating the integration of Defendica’s fuzing, initiation, and sensor technologies with U.S. munitions manufacturing capabilities
PHILADELPHIA, Pa. — July 29, 2026—Day & Zimmermann Lone Star LLC , a subsidiary of Day & Zimmermann, and Defendica Systems Inc. (Defendica) today announced the signing of a memorandum of understanding establishing a framework for cooperation in defense technology development and integration.
Through the memorandum, the companies intend to explore opportunities that bring together Defendica’s fuzing, initiation, and sensor technologies with Day & Zimmermann’s U.S.-based munitions manufacturing, energetics, and load-assemble-pack capabilities.
Potential areas of cooperation include evaluating technical interoperability, establishing joint testing and validation protocols, and identifying pathways toward applicable U.S., NATO and allied qualification standards. The companies will also assess opportunities to support the development of safe, reliable and scalable solutions responsive to evolving operational needs.
“This memorandum brings together Defendica’s field-informed technology development with Day & Zimmermann’s greater than 100 years of experience supporting the U.S. military and allied nations,” said Brigadier General (Retired) John J. McGuiness, President of Day & Zimmermann Munitions & Government. “By working together early in the development process, we can evaluate how emerging fuzing, initiation, and sensor technologies may be integrated into safe, reliable and scalable solutions that strengthen the U.S. defense industrial base and support allied readiness.”
Gamache added, "Modern battlefields punish systems that were designed in isolation. This memorandum is about making sure initiation, integration, and delivery are engineered as one architecture rather than assembled as three separate assumptions."
The memorandum reflects both companies’ interest in combining complementary technology-development and manufacturing capabilities. Any future programs or products resulting from the cooperation would be subject to separate agreements, applicable regulatory requirements, customer approvals and qualification processes.
About Day & Zimmermann Lone Star – For nearly 75 years, Day & Zimmermann’s Lone Star Plant, located in Texarkana, Texas, has been a cornerstone of the company’s munitions production capabilities and a key contributor to the U.S. defense industrial base. The facility manufactures a range of critical ordnance items, including electric and percussion primers, M67 fragmentation hand grenades and hand grenade fuzes, and signal cartridges.
As part of Day & Zimmermann’s broader munitions and government operations, the Lone Star Plant plays a strategic role in supporting the Department of Defense’s ammunition supply chain, surge readiness, and modernization goals.
About Day & Zimmermann - When you’ve been around for more than a century, you learn a thing or two. At Day & Zimmermann, we take our lifetime of experience and make things better. Our 37,000 employees help bring big ideas to life every day. We’re pushing the boundaries of innovation in construction & engineering, operations & maintenance, staffing, and security & defense. And that’s not all. Did we mention that we have 900+worldwide work locations with $3 billion USD in annual revenue? We put people to work, we protect American freedoms, and we help our customers power and improve the world. We do what we say®. Learn more at dayzim.com.
About Defendica - Defendica is a defense technology company founded in 2023, specializing in the research, development and engineering of next-generation fuzing and initiation systems, reconnaissance and sensing solutions, electronic warfare, and secure communications.
The company operates its own research and development laboratory covering the full development cycle—from design and engineering experimentation through validation under real-world field conditions. Defendica’s team includes serving military personnel and combat veterans, and its systems are developed in direct collaboration with frontline units. Learn more at defendicasystems.com
Media Contact: Holly Holt, VP, Marketing & Communications