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NNSA research spans the entire electromagnetic spectrum
Officials break ground on new Y-12 facility
NSDD: Strengthening national security from afar
Augmented Reality is all science – no fiction
A snapshot of NNSA’s counterterrorism mission
Honolulu awards NNSA for radiological security enhancements
  • Spectrum
  • Groundbreaking
  • NSDD
  • Augmented Reality
  • Counterterrorism
  • Honolulu
Maintaining the Stockpile
Emergency Response
Powering the Navy
Oversight and Change


About Us

Established by Congress in 2000, NNSA is a semi-autonomous agency within the U.S. Department of Energy responsible for enhancing national security through the military application of nuclear science. NNSA maintains and enhances the safety, security, and effectiveness of the U.S. nuclear weapons stockpile without nuclear explosive testing; works to reduce the global danger from weapons of mass destruction; provides the U.S. Navy with safe and effective nuclear propulsion; and responds to nuclear and radiological emergencies in the U.S. and abroad.