Learn more about Modernizing America’s Nuclear Stockpile
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September 15, 2026As Assistant Secretary for Environmental Management Tim Walsh kicked off the 12th National Cleanup Workshop today, he emphasized that the soon-to-be-named Office of Nuclear Restoration & Revitalization is conducting restoration projects with a sense of urgency and redeveloping former cleanup sites to bring tremendous impact to the local communities and the nation.Office of Environmental Management
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Press ReleaseSeptember 10, 2026NNSA announced today that the Y-12 National Security Complex has completed production of the B61-13 Canned Subassemblies (CSAs) required to support the last production unit needs for the B61-13 program.National Nuclear Security Administration
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Press ReleaseSeptember 9, 2026Advancing from Mission Need to a Defined Project in 18 MonthsNational Nuclear Security Administration
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Press ReleaseAugust 25, 2026NNSA and Pacific Fusion signed a MOU establishing a framework for public-private collaboration as the company broke ground on its Research and Manufacturing Campus in Albuquerque, NM.National Nuclear Security Administration
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July 29, 2026Leaders from NNSA’s Office of Research, Development, Test & Evaluation traveled to the University of Rochester in New York to celebrate the 50th anniversary of the Laboratory for Laser Energetics.National Nuclear Security Administration
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July 16, 2026NNSA unveiled plans for two new supercomputers, Mission and Vision, at LANL. Both systems will be built by Hewlett Packard Enterprise (HPE) and powered by the NVIDIA Vera Rubin platform.National Nuclear Security Administration
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July 15, 2026NNSA authorized startup of the Calciner Project at the Y-12 National Security and supports ongoing efforts to transform and recapitalize Y-12 in support of the nation’s nuclear deterrent mission.National Nuclear Security Administration
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July 8, 2026NNSA announced today that it had completed “diamond stamping” of all canned subassemblies (CSA) for the B61-13 nuclear gravity bomb planned for the current Fiscal Year three months ahead of schedule at the Y-12 National Security Complex.National Nuclear Security Administration
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Press ReleaseJune 26, 2026NNSA completed the West End Protected Area Reduction (WEPAR) Project, a major project that modernizes security at the Y-12 National Security Complex while reducing the site’s high-security area.National Nuclear Security Administration
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June 24, 2026NNSA announced Aires Tide, an NNSA-led proof-of-concept flight test vehicle developed using artificial intelligence, high-performance computing, and additive manufacturing to move from system design to flight testing on a sharply compressed timeline and at lower cost.National Nuclear Security Administration