NNSA News

The U.S. Department of Energy's National Nuclear Security Administration (DOE/NNSA) will conduct low-altitude helicopter flights over New Orleans and its surrounding areas, Sunday, February 2, through Thursday, February 6, ahead of the Super Bowl on February 9.

NNSA published a Notice of Intent in the Federal Register to prepare a Supplemental Environmental Impact Statement for the Plutonium Facility at Lawrence Livermore National Laboratory to meet vital stockpile stewardship requirements.

NNSA has published its Draft Site-Wide Environment Impact Statement (SWEIS) for Los Alamos National Laboratory assessing current and future impacts of the Lab’s operations.

NNSA completed the Last Production Unit (LPU) of the B61-12 Life Extension Program (LEP). The B61-12 is the latest modification to the B61 family of gravity bombs, which are deployed from U.S. Air Force and North Atlantic Treaty Organization bases.

In January 2025, NNSA Administrator Jill Hruby posted the following as a letter in Science, in response to the June 2024 article titled “The weapons potential of high-assay low-enriched uranium.”

The U.S. Department of Energy’s National Nuclear Security Administration (DOE/NNSA) will conduct low-altitude helicopter flights over the Las Vegas Strip and its surrounding areas, Sunday, December 29 through Tuesday, December 31, ahead of New Year’s Eve celebrations on the Las Vegas Strip.

The U.S. Department of Energy’s National Nuclear Security Administration and the Republic of Korea’s Ministry of Foreign Affairs co-hosted the seventh Nuclear Security Working Group this month at Lawrence Livermore National Laboratory.

The U.S. Department of Energy’s National Nuclear Security Administration and Japan’s Kyoto University have converted the Kyoto University Critical Assembly “Core C” from highly enriched uranium to high-assay low enriched uranium fuel.

The U.S. Department of Energy’s National Nuclear Security Administration (NNSA) will conduct low-altitude helicopter flights over the Las Vegas Strip and the Formula 1 Las Vegas Grand Prix race route, Tuesday, November 19, and Wednesday, November 20, in support of the 2024 Las Vegas Grand Prix.

NNSA launches Enterprise Blueprint, a 25-year roadmap to deliver essential infrastructure on time and at scale