NNSA
@NNSANews
NNSA delivers the U.S. nuclear stockpile, strengthens nonproliferation, powers a global naval fleet, and advances transformative tech. Led by @NNSAWilliams.
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The American Nuclear Renaissance is here! 🇺🇸
With 4 reactors reaching criticality at unprecedented speed, the U.S. is proving the future of nuclear is happening now.
NNSA is proud to partner across @ENERGY to accelerate innovation that powers our nation, strengthens national security, and keeps America at the forefront of nuclear leadership.
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NNSA is proud to partner with @GovNuclear by providing the HALEU needed to support @NASA's SR-1 Freedom mission to Mars and Radiant Industries' advanced reactor projects.
Thanks to @rookisaacman for his leadership and partnership in advancing nuclear power for space exploration.
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179M+ miles steamed on nuclear power. Zero reactor accidents.
40 years after his passing, Adm. Hyman Rickover’s relentless pursuit of safety and accountability still defines the Nuclear Navy.
@NNSAWilliams reflects on this enduring legacy:
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🚨NNSA has completed "diamond stamping" of all planned B61-13 nuclear gravity bomb canned subassemblies (CSAs) for the current Fiscal Year—three months ahead of schedule at @y12nsc.
This early milestone underscores our commitment to delivering on President Trump's national security mission with urgency and precision.🇺🇸
With all six of our modernization programs running ahead of schedule, the Nuclear Security Enterprise continues its record of 100% on-time or early delivery to the @DeptofWar this decade.
More here:
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As America celebrates 250 years of freedom and strength, we also celebrate the triumph of American innovation.
From the scientists and engineers of the Manhattan Project to today’s world-class workforce across the Nuclear Security Enterprise, innovation has helped secure our nation and preserve peace through atomic strength.
For generations, @NNSANews has built on that legacy—advancing the science, technology, and capabilities that keep America safe. 🇺🇸
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🚨🚨Since the start of the Trump Administration, NNSA has delivered over $1 BILLION in savings to American taxpayers by strategically negotiating contracts.
America is leading in nuclear energy and innovation, strengthening domestic capacity, and growing international cooperation on peaceful nuclear technology, ushering in a new nuclear renaissance.
@NNSAWiliams joined this year's NPT Review Conference, which offered the perfect forum to showcase that the U.S. is ready to offer its exquisite technology paired with the strongest possible safeguards.
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This National Police Week, NNSA honors the men and women in law enforcement who serve and protect. We remember the fallen and thank those who stand watch every day—including our partners and our own OST federal agents safeguarding nuclear security.
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Last week, the NNSA Graduate Fellowship Program wrapped up its 30th anniversary cohort and another productive year of fellows advancing the vital mission across the Nuclear Security Enterprise.
Thank you to every one of our exceptional 2025-2026 fellows for your dedication to protecting our great nation! 🇺🇸
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Deputy Administrator Scott Pappano continues his tours across the National Security Enterprise with a visit to @Livermore_Lab.
Home to the groundbreaking National Ignition Facility, the record‑setting El Capitan supercomputer, and some of the top scientific talent in the nation, Livermore is dedicated to keeping America's nuclear deterrent safe, secure, and effective. Strong work by the LLNL team as they continue advancing our national security mission.
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.@SecretaryWright: "We're accelerating production of uranium components, high explosives, and other critical weapons materials...Last year, the National Ignition Facility achieved fusion ignition multiple times, including a record 8.6 megajoules in one shot. No other country has achieved ignition even once."
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Huge win for the United States, Venezuela, and the world thanks to President Trump's PEACE through STRENGTH agenda!
DOE's @NNSANews successfully removed ALL remaining enriched uranium from a legacy reactor in Venezuela—a process that could've taken years, completed in months.
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NNSA teams train hard so they are ready when it matters most. NNSA recently hosted the 2026 Active Assailant Response Workshop bringing protective force officers, firefighters, and emergency responders together for realistic training that improves teamwork, communication, and lifesaving response.
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Last week, @NNSAWilliams joined the @AtlanticCouncil for a roundtable discussion on the future of fusion energy and the importance of American leadership in next-generation nuclear technology🔋⚛️
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Kicking off the @iaeaorg's #CyberCon26# with Dr. Matthew Napoli, Deputy Administrator at @NNSANews.
🇺🇸 leadership in nuclear cybersecurity protects Americans, defends critical infrastructure, and sets the global standard for nuclear security.
@State_IO
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Happy Mother’s Day!
.@SecretaryWright highlights the critical role of @ENERGY’s National Labs and the world-class scientists across all 17 labs driving the next generation of American research and innovation.
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Because of President Trump’s decisive leadership, NNSA and our partners successfully removed all remaining highly enriched uranium from a legacy research reactor in Venezuela. This mission strengthens global nuclear security and sends a clear message that America leads from strength.
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The U.S. has secured its largest-ever HALEU fuel shipment, working in partnership with Japan. This significant transfer advances President Trump’s strategy to restore America's energy dominance and power next-generation nuclear reactors.
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