Amentum Breaks Ground on Radiation Combined Environment Test Facility at WestGate@Crane

August 21, 2025 at 08:45 AM EDT

Amentum (NYSE: AMTM), in partnership with Naval Surface Warfare Center, Crane Division (NSWC Crane), broke ground today on a one-of-a-kind Radiation Combined Environment (RCE) Test Facility in Odon, Indiana that will play a critical role in advancing microelectronics efficacy for the U.S. Department of Defense.

“As our nation faces increasingly complex threats, the ability to test and validate microelectronics in the harshest conditions—conditions that mirror real-world conflict environments—is not just important; it’s essential,” said Mark Walter, president for the Engineering and Technology Business Group at Amentum. “With our decades of engineering and mission experience, we’re leading the charge by investing in the Crane innovation ecosystem and developing a critical capability that directly supports the warfighter.”

The RCE Test Facility marks a major milestone in the partnership between Amentum and NSWC Crane, with more than four decades of collaboration and over 20 years of dedicated support to strategic microelectronics initiatives.

"We are proud to partner with Amentum on this state-of-the-art RCE Test Facility that will ensure rigorous testing of the components that our warfighters depend on, meeting both current fleet needs and future mission requirements," said Dr. Angela Lewis, SES, technical director at NSWC Crane. “Trusted microelectronics are foundational to reliable and robust systems across all defense domains.”

The facility will draw on Amentum’s deep technical expertise from across its global company, with specialties spanning project management, critical facility design and engineering, radiation and radiological safety, and licensing and permitting — ensuring safe, compliant, and efficient delivery.

The RCE Test Facility is expected to generate highly skilled technical jobs and bolster the broader Crane / WestGate innovation ecosystem. Significant support has been received from multiple entities including U.S. Navy Strategic Systems Programs, Test Resource Management Center, Verus Research, developer Strongbox Commercial, Indiana Economic Development Corporation, Daviess County, and WestGate@Crane Technology Park supported by Uplands Science and Technology Foundation.

About Amentum

Amentum is a global leader in advanced engineering and innovative technology solutions, trusted by the United States and its allies to address their most significant and complex challenges in science, security and sustainability. Our people apply undaunted curiosity, relentless ambition and boundless imagination to challenge convention and drive progress. Our commitments are underpinned by the belief that safety, collaboration and well-being are integral to success. Headquartered in Chantilly, Virginia, we have more than 53,000 employees in approximately 80 countries across all 7 continents.

Visit us at amentum.com to learn how we advance the future together.

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Forward-Looking Statements

This press release contains or incorporates by reference statements by Amentum Holdings, Inc. (the “Company”) that relate to future events and expectations and, as such, constitute “forward-looking statements” as that term is defined in the Private Securities Litigation Reform Act of 1995 and other federal securities laws. These forward-looking statements may be characterized by terminology such as “believe,” “project,” “expect,” “anticipate,” “estimate,” “forecast,” “outlook,” “target,” “endeavor,” “seek,” “predict,” “intend,” “strategy,” “plan,” “may,” “could,” “should,” “will,” “would,” “will be,” “will continue,” “will likely result,” or the negative thereof or variations thereon or similar terminology generally intended to identify forward-looking statements. All statements, other than historical facts, including, but not limited to, statements regarding the anticipated work and revenue under the awarded contract, and the Company’s objectives, expectations and intentions, applicable legal, economic and regulatory conditions, and any assumptions underlying any of the foregoing, are forward-looking statements.

A number of important factors could cause actual results to differ materially from those contained in or implied by these forward-looking statements, including those factors discussed in our filings with the Securities and Exchange Commission (SEC), including, among others: the occurrence of an accident or safety incident; the ability of the Company to control costs, meet performance requirements or contractual schedules; and other factors set forth under Item 1A, Risk Factors in our Annual Report on Form 10-K for the fiscal year ended September 27, 2024, which can be found at the SEC’s website at www.sec.gov or the Investor Relations portion of our website at www.amentum.com. Any forward-looking statement speaks only as of the date on which it is made, and the Company assumes no obligation to update or revise such statement, whether as a result of new information, future events or otherwise, except as required by applicable law.

View source version on businesswire.com: https://www.businesswire.com/news/home/20250821453397/en/

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Media Contact:

David Hylton

david.hylton@amentum.com

Investor Contact:

Nathan Rutledge

IR@amentum.com

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Amentum Breaks Ground on Radiation Combined Environment Test Facility at WestGate@Crane

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