In this episode of NucleCast, Adam talks with Dr. Byron Ristvet to discuss the complexities of nuclear testing, its historical context, and the current state of nuclear readiness. They delve into the types of nuclear tests, the role of various laboratories, and the controversial history surrounding Rocky Flats. The conversation highlights the importance of understanding nuclear policy and the implications of testing in today's geopolitical landscape.

Currently, Dr, Ristvet is a consultant to Sandia National Laboratory and Lawrence Livermore National Laboratory for studies on nuclear test detection, and through Keystone International and MSTS, a consultant to LANL, DoE IN-1 and NNSA/NFO. He is a Senior Mentor in Sandia’s Weapons Intern and Professional Development programs, and low yield nuclear monitoring research.

Prior to his semi-retirement in February 2017, Dr. Ristvet was a senior subject matter expert (SME) to DTRA’s Research and Development Directorate in the areas of nuclear and conventional weapons effects and testing, hard and deeply-buried-target characterization and defeat, counter-terrorism, cooperative threat reduction, knowledge preservation, nuclear test readiness, and to the Defense Threat Reduction Information Analysis Center. Prior to the underground nuclear testing (UGT) moratorium in 1992, he was the UGT containment scientist for the Defense Nuclear Agency. Based on his experience, he is an advisor to the U.S. intelligence community on foreign nuclear programs.

Dr. Ristvet had a key role in DoD’s Cooperative Threat Reduction efforts with the Russian Federation nuclear laboratories and the Kazakhstan National Nuclear Center. He is currently an Octant Associates consultant for DTRA nuclear proliferation prevention activities at the Semipalatinsk Test Site in Kazakhstan.

Chapters

00:00 Introduction to Nuclear Testing and Its Importance

01:20 Understanding Nuclear Testing: Types and History

05:38 Current State of Nuclear Testing and Readiness

09:05 The Role of Laboratories in Nuclear Weapons Development

13:34 Debunking Myths: The Rocky Flats Controversy

18:27 Types of Nuclear Testing Conducted

19:54 Key Takeaways and Future Considerations

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In this episode of NucleCast, Ben Souther discusses the complexities of managing data in large projects, particularly focusing on the requirements from various stakeholders, including government regulations and internal procedures. He emphasizes the importance of navigating through extensive data to ensure successful project execution.

Ben Souther is the general manager of the Environmental and Security business line of Bechtel’s Nuclear, Security, and Environmental global business unit. Ben is an accomplished professional with more than 20 years of extensive experience and knowledge in automation, engineering, construction, delivery, and project management positions for Bechtel. His current portfolio includes the oversight of multiple government projects, operating sites, and national laboratories focused on nuclear security and nuclear waste management for the U.S. Department of Energy.

Ben joined Bechtel on the Waste Treatment Plant project in 2002 supporting project automation efforts and in 2006 he began working on the Pueblo Chemical Agent-Destruction Pilot Plant project serving in various roles in project controls and construction. Other previous senior leadership roles include deputy project manager, business manager, and vice president of the Bechtel LLC working for the U.S. Army on Kwajalein Atoll in the Marshall Islands in 2011. He served as executive assistant to the president of NS&E from 2013 to 2015 and then went on to become an M&BD manager for the Defense & Security business line.

He received his bachelor’s in business administration (Cum Laude) (Management Information Systems) from Washington State University and is PMI Project Management Professional (PMP) certified.

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In this episode of NucleCast, host Adam Lowther engages in a thought-provoking conversation with Rob Kittinger, a seasoned expert from Sandia National Labs. They delve into the critical role of human factors in nuclear safety and explore the intriguing dynamics of the AI race between the US and China. From the potential pitfalls of human error to the strategic implications of AI advancements, this episode offers a deep dive into the challenges and opportunities shaping our nuclear future.

"Other examples of color vision affecting job safety can be found here: https://waggonerdiagnostics.com/pages/law-enforcement "

Robert Kittinger, Ph.D. is a Senior Fellow at the National Institute for Deterrence Studies (NIDS). He spent nearly 10 years at Sandia National Laboratories, culminating in the Nuclear Threat Science department and working in Nuclear Emergency Support and Counterterrorism & Counter-Proliferation (CTCP). During his time at Sandia, he was also a 2017 graduate of the prestigious Weapon Intern Program (WIP).

Before joining Sandia, Dr. Kittinger spent over five years as a civilian in the U.S. Navy and was part of a five-person tech startup, BookLamp, which was acquired by Apple in 2013. Following his tenure at Sandia, he served as a senior researcher at Amazon and currently holds the role of Chief Research Officer at a MedTech company.

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Adam sits down with Curtis McGiffin—strategist, educator, and co-author—to explore his groundbreaking argument for redefining national instruments of power. Curtis introduces DIMET, adding “Technology” to the traditional DIME framework, and explains why high-tech capabilities have become a standalone measure of national strength. The discussion dives into how technological innovation is reshaping deterrence, influencing global power dynamics, and driving the future of warfare. Plus, Curtis shares insights from the National Institute for Deterrence Studies’ proposed Nuclear Posture Review, offering bold recommendations for strengthening U.S. nuclear deterrence in an era of rapid change.

Link to Paper: Curtis McGiffin, DIMET: Shaping the Age of “Techno-Strategic” Power, No. 637, September 22, 2025 – Nipp

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In this episode of NucleCast, Adam interviews Brian Groft, a senior leader at Systems Planning and Analysis (SPA), to discuss the A&AS mission and its significance in supporting the Department of Defense. Groft shares insights on the role of A&AS contractors, the importance of DTRA in nuclear operations, and the differences between various types of contracting. They also discuss the future of DTRA, the costs associated with government versus contractor roles, and the need for improved collaboration between contractors and government agencies.

Brian Groft possesses 16 years of experience leading teams of scientists and engineers providing technical advisory services to government customers responsible for challenging homeland security and national defense missions. He serves as the Strategic Growth Manager for SPA which includes providing executive leadership in the defense and homeland security industry with emphasis in chemical, biological, radiological, nuclear, and explosive defense (CBRNE), Counter WMD, System Engineering, and R&D fields.

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In this conversation, Brent Sadler discusses the critical importance of maritime issues in relation to national security and economic stability. He emphasizes the need for a dedicated maritime advisor to the president and highlights the current gaps in leadership within the Navy's shipbuilding sector. The conversation underscores the necessity of interagency coordination to ensure timely delivery of warships and the overall revival of American maritime strength.

Brent Sadler joined Heritage Foundation after a 26-year Navy career with numerous operational tours on nuclear powered submarines, personal staffs of senior Defense Department leaders, and as a military diplomat in Asia. As a Senior Research Fellow, Brent’s focus is on maritime security and the technologies shaping our future maritime forces, especially the Navy.

Brent is a 1994 graduate with honors of the United States Naval Academy with a degree in Systems Engineering (robotics) and a minor in Japanese. As a 2004 Olmsted Scholar in Tokyo, Japan, he studied at Keio University, Jochi University and the United Nations University. He has a master of arts from Jochi University and master of science from National War College, where he graduated with distinction in 2011 and received several writing and research awards.

In 2011, he established the Navy Asia Pacific Advisory Group (NAPAG), providing regionally informed advice directly to Chief of Naval Operations’ (CNO). He again served on the CNO’s personal staff in 2015-2016, playing a key role in developing the Defense Department’s Third Offset.

At Pacific Command from 2012-2015, he held numerous key positions. As lead for Maritime Strategy and Policy, he incorporated all 10 Association of Southeast Asian Nations (ASEAN) into the first regional maritime domain awareness forum and was instrumental in the eventual passage of the $500 million-dollar Maritime Security Initiative. As Special Advisor on Japan, and a Council of Foreign Relations International Affairs Fellow in Tokyo, he played a key role in revising the U.S. and Japan Defense Guidelines. As Deputy Director Strategic Synchronization Group, he oversaw a think-tank like body of over 30 advisors and analysts. Brent led the Commander’s Rebalance Task Force coordinating execution of the President’s Defense Strategic Guidance—Rebalance to the Asia-Pacific resulting in over $12 billion USD of additional monies budgeted in fiscal years 2013 through 2015 during a time of fiscal austerity.

Following his final tour on CNO’s staff, Brent returned to Asia as Senior Defense Official, Defense and Naval Attaché in Malaysia. During his tenure he played a key role in coordinating responses to the USS McCain collision in August 2017, opened several politically sensitive ports and airfields to U.S. forces, oversaw unprecedented expansion of U.S. military relations, and steadied relations during the historic May 2018 national elections ushering in an opposition party for the first time since independence.

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Adam interviews Dr. Kyle Balzer and Bob Peters on their recent article in Breaking Defense. They discuss the future of the Sentinel ICBM program, particularly the potential for mobile basing options. They explore the cost implications, strategic effectiveness, and the need for political engagement to advocate for a more robust nuclear deterrent. The conversation emphasizes the importance of adapting to a changing threat environment, particularly with the rise of peer competitors like China, and the necessity of public discourse on nuclear strategy.

Kyle Balzer is a Jeane Kirkpatrick Fellow at the American Enterprise Institute, where he specializes in US nuclear strategy and policy. He is currently working on a book project, The Revivalist: James R. Schlesinger and the Rebirth of Cold War U.S. Nuclear Strategy. It examines the origins of diagnostic net assessment and competitive nuclear strategies. His work has been published in Breaking Defense, National Review Online, The Hill, The National Interest, and War on the Rocks.

Robert J. Peters is Chief of the Strategic Integration Directorate within the Strategic Trends and Effects Department (STED) at the Defense Threat Reduction Agency (DTRA). He leads efforts to generate actionable insights on counter-WMD and emerging threats, assess agency effectiveness, and foster strategic dialogues with allies through research and exercises.

Previously, Peters was a Senior Research Fellow at the National Defense University’s Center for the Study of Weapons of Mass Destruction. He also served as Special Assistant to the DASD for Countering WMD at the Office of the Secretary of Defense-Policy, and held roles at Northrop Grumman and the Potomac Institute.

He holds an MA in National Security Studies from Georgetown University and a BA in Political Science and History from Miami University. His published work includes articles in Strategic Studies Quarterly, 38 North, and the Nonproliferation Review.

Article Link: Forge ahead with the Sentinel ICBM, but consider making it mobile - Breaking Defense

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Join us for an insightful conversation with Brian Zieroth, Senior Program Manager at the Uranium Processing Facility (UPF) at Y-12. Discover the pivotal role UPF plays in supporting the nation's nuclear deterrent and global security missions. Brian shares the challenges and triumphs of modernizing uranium processing capabilities, emphasizing the importance of safety and innovation. With construction set to complete in 2027, UPF is poised to be a cornerstone of national security infrastructure. Don't miss this deep dive into a project that ensures our strategic deterrent remains robust and reliable.

Brian is the senior project manager for the Uranium Processing Facility (UPF) in Oak Ridge, Tennessee, a plant designed to replace older, outdated facilities and meet modern safety and environmental standards. He is responsible for all engineering, procurement, construction, and startup activities. He has nearly 30 years’ experience with Bechtel, and is a Bechtel Principal Vice President. Brian brings diverse industry experience to his leadership role for the UPF project.

He has held project management roles of increasing responsibility at the Waste Treatment and Immobilization Plant (WTP) at the Hanford site, the Chemistry and Metallurgy Replacement Project (CMRR) at Los Alamos National Laboratory, UPF, and as Director for Enterprise Line-Item Projects at Consolidated Nuclear Security, where he provided oversight for the Y-12 site in Oak Ridge and the Pantex Plant in Amarillo, TX. In 2022, he became area project manager for the main processing building at UPF, before being named to his current role in 2024.

He joined Bechtel in 1997 in the Information Systems and Technology group for Bechtel Enterprises. In 2003, he became deputy IS&T manager on the Iraq reconstruction project in Baghdad. In 2006, he moved to the U.S. Department of Energy Advanced Mixed Waste Treatment Project in Idaho. He was then named plant automation manager at the Pueblo Chemical Agent-Destruction Pilot Plant in 2010 and chief information officer at WTP in 2012.

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Dr. Michaela Dodge discusses the ongoing conflict between Russia and the West, emphasizing the need for the United States to recognize and respond to Russia's aggressive actions. The conversation explores the historical context of Russia's imperial ambitions, the challenges of mobilizing public support for defense spending, and the importance of education in fostering informed citizens. Dodge argues that the U.S. must take adversarial threats seriously and prepare accordingly to ensure national security and global stability.

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Adam welcomes Major General Colin Connor where he focuses on the modernization of the Intercontinental Ballistic Missile (ICBM) system, specifically the Sentinel ICBM. Major General Connor, who leads the modernization efforts at Air Force Global Strike Command, shares insights into the challenges and progress of the Sentinel program. The conversation covers the importance of maintaining the Minuteman 3 system until Sentinel is fully operational, the complexities of modernizing infrastructure, and the critical role of collaboration with industry partners. The episode emphasizes the strategic significance of ICBMs in national security and the ongoing efforts to ensure the new system meets future needs.

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