Organization
The National Nuclear Security Administration (NNSA)
The National Nuclear Security Administration (NNSA) is a semi-autonomous agency of the U.S. Department of Energy, established by Congress in 2000. Its core mission is to protect the nation through the design and maintenance of a secure, reliable, effective nuclear arsenal that complies with...
'Badger' explosion, April 18, 1953. Photograph: National Nuclear Security Administration - Nevada Site Office.