National Nuclear Security Administration

Missions

Two technicians working on the B61 in the vibration shock lab

The U.S. Nuclear Weapons Stockpile

One of NNSA’s core missions is to ensure the United States maintains a safe, secure, and reliable nuclear stockpile through the application of unparalleled science, technology, engineering, and manufacturing. The Office of Defense Programs carries out NNSA’s mission to maintain and modernize the nuclear stockpile through the Stockpile Stewardship and Management Program.

Established by Congress in 2000, NNSA is a semi-autonomous agency within the U.S. Department of Energy that protects our nation by designing and delivering a safe, secure, reliable, and effective U.S. nuclear stockpile; forging solutions that enable global security and stability through nonproliferation, counterproliferation, and emergency response; providing nuclear propulsion to power a global U.S. Navy; and leveraging transformative technologies to address emerging challenges.

Map of NNSA Sites

NNSA and our partners across laboratories, plants, and sites — collectively the Nuclear Security Enterprise — provide comprehensive nuclear security solutions that protect the American people, our allies, and our partners in a dynamic world.

Contact Us

National Nuclear Security Administration

U.S. Department of Energy, NNSA
1000 Independence Ave., SW
Washington, DC 20585

E-mail Us

Follow Us

This question is for testing whether or not you are a human visitor and to prevent automated spam submissions.