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Our Programs

NNSA's program support is divided into several key program areas including Defense, Nuclear Nonproliferation, Naval Reactors, Emergency Operations, Infrastructure and Environment, Nuclear Security, Management and Administration and the Office of the Administrator. Each program area is focused on specific challenges.

Defense icon

One of the primary missions of NNSA is to maintain and enhance the safety, security and reliability of the U.S. nuclear weapons stockpile. NNSA, through its Office of Defense Programs, ensures that the U.S. nuclear arsenal meets the country’s national security requirements and continues to serve its essential deterrence role.

One of the gravest threats the United States and the international community face is the possibility that terrorists or rogue nations will acquire nuclear weapons or other weapons of mass destruction (WMD). NNSA, through its Office of Defense Nuclear Nonproliferation, works closely with a wide range of international partners, key U.S. federal agencies, the U.S. national laboratories, and the private sector to detect, secure, and dispose of dangerous nuclear and radiological material, and related WMD technology and expertise.

Powering the Nuclear Navy

The Naval Nuclear Propulsion Program provides militarily effective nuclear propulsion plants and ensures their safe, reliable and long-lived operation. This mission requires the combination of fully trained U.S. Navy men and women with ships that excel in endurance, stealth, speed, and independence from supply chains.

Emergency Response

NNSA ensures that capabilities are in place to respond to any NNSA and Department of Energy facility emergency. It is also the nation's premier responder to any nuclear or radiological incident within the United States or abroad and provides operational planning and training to counter both domestic and international nuclear terrorism.

New Nuclear Security icon

The Office of Defense Nuclear Security (DNS) is responsible for the development and implementation of security programs for NNSA. In this capacity, DNS is the NNSA line management organization responsible for security direction and program management with respect to prioritization of resources, program evaluation, and funding allocation. Key management areas include security operations, resources, engineering, and technical support to NNSA field elements and facilities. Specific subject matter expertise also includes physical and personnel security, protective forces, nuclear materials control and accountability, classified and sensitive information protection, and technical security programs.

The Office of Counterterrorism and Counterproliferation is charged with providing expertise, practical tools, and technically informed policy recommendations required to advance U.S. nuclear counterterrorism and counterproliferation objectives. The office executes a unique program of work focused solely on the these missions, synchronizing their support activities across the NNSA, coordinating DOE/NNSA related policies, and building partnerships with U.S. government agencies and key foreign governments on these issues.