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Brandon Williams
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@NNSAWilliams

Brandon Williams

@NNSAWilliams
Serving as the Under Secretary of Nuclear Security @ENERGY and @NNSAnews Administrator under the leadership of President Trump. Sworn in on September 26, 2025.
Washington, DC
energy.gov/nnsa/person/br…
Joined April 2014
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  • @NNSAWilliams
    Brandon Williams
    @NNSAWilliams
    9h
    The most effective way to maintain deterrence is to deliver capabilities at a pace that our enemies cannot hope to match, and at a scale relevant to the threat.
  • @NNSAWilliams
    Brandon Williams
    @NNSAWilliams
    11h
    Another great visit to @SandiaLabs to see the progress our teams are making to accelerate production, deliver critical capabilities on schedule, and strengthen the science and engineering that underpin America’s nuclear deterrent. I’m proud of the Sandia team and the critical
  • @NNSAWilliams
    Brandon Williams
    @NNSAWilliams
    Aug 28
    Deterrence and nonproliferation are not static. We must always stay one step ahead of our adversaries.
  • @NNSAWilliams
    Brandon Williams
    @NNSAWilliams
    Aug 28
    Public-private partnerships are essential to unleashing American innovation, strengthening our national security, and ensuring the United States wins the global fusion race. Great to join @_Pacific_Fusion in Albuquerque for its groundbreaking ceremony for its Research and
    @NNSANews
    NNSA
    @NNSANews
    Aug 28
    NNSA has officially signed a Memorandum of Understanding (MOU) with @_Pacific_Fusion as they break ground on a $1 billion research and manufacturing Campus in Albuquerque, New Mexico. Through this new public-private partnership, NNSA and Pacific Fusion will collaborate on
    1
  • @NNSAWilliams
    Brandon Williams
    @NNSAWilliams
    Aug 26
    Great to visit @KairosPower's Manufacturing Development Campus in Albuquerque and see firsthand the incredible work underway to support future reactor deployments. Thank you to the engineers and staff for showing us how American innovation is helping lead the nuclear renaissance