The National Nuclear Security Administration (NNSA) welcomed Jason A. Armstrong as manager of the NNSA Savannah River Field Office today, where he leads a team of approximately 50 federal employees and a contract workforce of nearly 4,000 people in managing and operating contracts with an annual budget of $1.3 billion. NNSA activities at the Savannah River Site serve two primary missions: managing the nuclear stockpile and nonproliferation. Mr. Armstrong is responsible for executing these missions by providing oversight of site programs, nuclear operations, security, quality assurance, environment, safety and health, and the overall execution of key mission deliverables. He is a member of the Senior Executive Service.

Before assuming leadership of the NNSA Savannah River Field Office, Mr. Armstrong previously served as Assistant Manager for Nuclear Safety and Engineering at the NNSA Production Office in Tennessee from March 2018 to April 2021. There, he was responsible for multiple duties to include nuclear safety and upkeep of equipment and facilities critical to the nation’s nuclear weapons enterprise. Duties also included ensuring facilities at the Y-12 National Security Complex (Oak Ridge, TN) and the Pantex Plant (Amarillo, TX) operate safely and securely.

Mr. Armstrong received a Bachelor of Science degree in Radiation Health Physics from Oregon State University. In addition, he is a Certified Health Physicist and attended the DOE Nuclear Executive Leadership Training course.

Formerly acting field office manager Jeffrey M. Allison has returned to his duties as deputy manager of the Savannah River Field Office where he directly supports NNSA national security missions and future tritium production capabilities to meet stockpile requirements.