The challenging missions of NNSA require a highly-skilled and truly dedicated team of physicists, engineers, accountants, analysts, technicians and more. Many team members spend decades of their lives committed to preserving our nation’s security in a variety of ways. When one of our own reaches a major career milestone, we take the opportunity to say, “Thank you for your service.”
Phil Calbos distinguished himself through exemplary service as the Acting Deputy
Administrator for the Office of Defense Programs from July 2016 through October 2018. His mission-driven leadership guided Defense Programs through its most transformative period since the end of the Cold War. His achievements include lasting benefits to the long-term health, safety, and security of the Nation's nuclear deterrent, as well as the legacy of the Stockpile Stewardship Program.
In recognition of his contributions, he was awarded the Secretary’s Appreciation Award as well as the Administrator’s Gold Service Award. Calbos resumed his position as Principal Assistant Deputy Administrator for Defense Programs after Dr. Charles P. Verdon was sworn in as Deputy Administrator.
After 43 years of outstanding Federal service, Anthony “A.J.” Gipson has retired as the Director for NNSA’s Office of Preparedness for Emergency Operations. After graduating from the U.S. Air Force Academy in 1977, Gipson started out as a Master Navigator, logging over 2,600 flight hours on B-52 and B-1B bombers. He later transitioned to munitions maintenance supervisor, commanded a munitions maintenance squadron, and then became Director of Maintenance for the B-1B.
Crowning his 23-year Air Force career, Gipson was named Director of Stockpile Management for the Defense Special Weapons Agency and the Executive Staff Director for NNSA. Gipson spent the next decade as the Program Manager for NNSA’s Radiological Assistance Program teams. In this role, he also served as Acting Deputy Associate Administrator for the Office of Emergency Operations.
Stephen Loo dedicated his skills and expertise as a mechanical engineer to an accomplished career in public service. He began his career in 1985 at McClellan Air Force Base, and later spent time at Naval Air Station Alameda. In 2000, he joined the Livermore Field Office as a project engineer for the Defense Programs Operations Division. At the time of his retirement, he was a Federal Project Director and Project Management Professional.
Throughout his career, Loo served in a wide range of engineering roles including several technical positions that supported the Military Construction Program, Mechanized Materials Handling Program, Defense Program, Facilities Infrastructure Recapitalization Program, and facility management. He stepped up to lead the construction plan for the Livermore Solar Project, which advanced a critical sustainability goal of the Department of Energy. Prior to his retirement, Loo was recognized for over 33 years of distinguished public service with both the Departments of Defense and Energy.
Keith Hamilton, NNSA Deputy Associate Administrator for Acquisition and Project Management and NNSA’s Senior Procurement Executive, received the Department of Navy Superior Civilian Service Award for his exemplary performance while serving as the Deputy Director of Facilities, Headquarters U.S. Marine Corps and Marine Corps Installations Command from August 2015 to March 2018.
As Deputy Director, Hamilton successfully oversaw the development and implementation of the Deputy Commandant’s cornerstone initiative, which fundamentally transformed infrastructure investment by recapitalizing and reducing the facility’s footprint. He also demonstrated superb leadership and professionalism in the management of over 2.5 million acres of land, 52,000 facilities, and $80 billion of infrastructure to support the U.S. Marines.