Virginia-based Amentum holds an ownership stake in about 30 active joint ventures, the company said in a financial filing last week with the Securities and Exchange Commission (SEC).
Amentum’s ownership percentages in these joint ventures, typically limited liability corporations or LLCs, “range from 25% to 50%,” the company said in an SEC filing around the time it reported quarterly earnings.
“Many of our joint ventures only perform on a single contract,” Amentum said in the filing. “The modification or termination of a contract under a joint venture could trigger an impairment in the fair value of our investment in these entities. In the aggregate, our maximum exposure to losses was $218 million related to our equity method investments as of January 2, 2026.”Amentum is part of joint ventures doing billions of dollars’ worth of business in the Department of Energy’s nuclear complex, including being lead partner in environmental contracts at the Idaho National Laboratory, the Portsmouth Site in Ohio and the Oak Ridge Site in Tennessee.
Longtime nuclear manager Jason Remer announced last week on LinkedIn he has been appointed as nuclear policy adviser for the White House Office of Science and Technology Policy.
Since 2008, Remer has worked in senior positions at the Department of Energy’s Idaho National Laboratory, the Nuclear Energy Institute and Parsons Corp., according to his LinkedIn profile.
Illinois Gov. JB Pritzker (D) signed an executive order this week that will focus on new nuclear generation with a goal of adding at least 2 gigawatts or 2,000 megawatts.
According to the Wednesday order, Pritzker called for the Illinois Power Agency and Illinois Commerce Commission to consult with other agencies and issue a notice of inquiry (NOI) to nuclear companies to build new in-state nuclear generation.
The NOI will include information regarding the size and type of reactor, including small modular reactors (SMRs), potential sites for each plant, timelines to bring the nuclear facility online and fueling lifecycle plans, including plans to meet fueling needs and to handle waste disposal.
The NOI should also address potential expansion of or power uprates for existing power plants in Illinois, according to the document. The state agencies should carry this action out within 60 days.
The National Nuclear Security Administration removed a total of 68 radioactive devices nationwide in 2025, the agency said in a press release.
The removals were part of the Cesium Irradiator Replacement Project, which involves removing cesium-137 irradiators used for medical treatments and replacing them with a non-radioactive alternative, and the Off-Site Source Recovery Program, which has been an initiative since 1997 to eliminate radioactive devices. Even devices that could have a benevolent effect, like the irradiators, pose a national security threat since the radioactive material inside is at risk for potential adversarial uses if stolen, including a “dirty bomb” or a mix of radioactive material and conventional explosives, the release said.
A nuclear reactor capable of generating 5 megawatts was airlifted from March Air Force Base (AFB), Calif. to Hill AFB, Utah, on Sunday Feb. 15, according to a release on the Pentagon’s website.
This is the first time a nuclear reactor has been airlifted as a form of transport. Three C-17 transport planes flew individual components of a Valar Atomics 250 nuclear reactor, which was unfueled. The Ward 250 is five megawatts and could “theoretically power about 5,000 homes,” the Pentagon press release said.
Following the reactor transport was a press conference at Hill AFB with Secretary of Energy Chris Wright, Under Secretary of War for Acquisition and Sustainment Michael Duffey, Utah Governor Spencer Cox, and Valar Atomics CEO Isaiah Taylor. They brought up President Donald Trump’s four nuclear-energy focused executive orders from May.