A United States National Nuclear Security Administration (NNSA) is section of the United States Department of Energy. It works to enhance national security through the military application of nuclear energy. A NNSA besides maintains & enhances a safety, dependableness, & performance of the United States nuclear weapons stockpile, including the ability to project, garden truck, & line 1 text, sequentially to meet national security requirements.

NNSA has 4 missions by using regard to National Security:

To provide a United States Navy with safe, militarily effectual nuclear propulsion plants & to assure a safe and dependable operation of people plants. To promote international nuclear safety & nonproliferation. To reduce spherical danger from either weapons of mass destruction. To trend lines United States leadership within science and technology.