Government Agency: National Nuclear Security Administration (NNSA)

Website: <a href="https://www.energy.gov/nnsa/national-nuclear-security-administration" class="text-blue-500 underline hover:text-blue-700" target="_blank" rel="noopener noreferrer">https://www.energy.gov/nnsa/national-nuclear-security-administration
Phone: 1-202-586-5000 (energy switchboard)
Address: 1000 Independence Ave., SW, , Washington, DC 20585
Contact: https://www.energy.gov/nnsa/nnsa-contact-us
More Information: <a href="https://www.usa.gov/agencies/national-nuclear-security-administration" class="text-blue-500 underline hover:text-blue-700" target="_blank" rel="noopener noreferrer">Learn more

National Nuclear Security Administration (NNSA) serves the public with a range of services and resources. The main office is located at 1000 Independence Ave., SW, , Washington, DC 20585.