National Nuclear Security Administration (NNSA) [DOE]

Maintains and enhances the safety, security, and effectiveness of the U.S. nuclear weapons stockpile, 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

Civilian Agency

Department of Energy (DOE)

https://www.energy.gov/nnsa/national-nuclear-security-administration