National Nuclear Security Administration (NNSA)

About National Nuclear Security Administration (NNSA)

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 and counterproliferation; responding to nuclear and radiological emergencies in the U.S. and abroad; providing nuclear propulsion to power a global U.S. Navy; and leveraging transformative technologies to address emerging challenges. The Nuclear Security Enterprise includes: headquarters sites in Washington, DC; Gaithersburg, MD; and Albuquerque, NM; as well as Kansas City National Security Campus in Kansas City, MO; Lawrence Livermore National Laboratory in Livermore, CA; Los Alamos National Laboratory in Los Alamos, NM; the Nevada National Security Site in Las Vegas, NV; the Pantex Plant in Amarillo, TX; Sandia National Laboratories in Albuquerque, NM, and Livermore, CA; the Savannah River Site in Aiken, SC; and the Y-12 National Security Complex in Oak Ridge, TN.