What is the National Nuclear Security Administration responsible for and how are Trump's layoffs affecting it?

The National Nuclear Security Administration (NNSA) is responsible for maintaining America's nuclear arsenal, including refurbishing and ensuring safe storage and transportation of thousands of nuclear weapons. They manage national nuclear labs, develop nuclear propulsion systems for submarines, prevent nuclear terrorism, and create new nuclear weapons. Under the Trump administration, the NNSA has received termination notices for over 300 employees out of a total staff of approximately 2,000 people. This significant reduction—affecting roughly 15% of this small, expert agency—raises serious concerns about maintaining nuclear security and safety standards at a critical national security organization.