Evyn Anderson Evyn Anderson serves as the Deputy Director of the High Explosives and Energetics program at the National Nuclear Security Administration, where she oversees production operations and strategic integration of weapon explosives and energetics supporting the U.S. nuclear stockpile. With close to 10 years of experience in program management and technical expertise, Evyn has led the development and execution of multi billion dollar program justifications for senior leadership, OMB, and Congress. Her expertise includes cross enterprise coordination and management, appropriations planning and analysis, and demand execution across national laboratories and defense partners. She holds a DOE Q clearance and is a Political Science doctoral candidate at American University, with an MPP from the University of Denver and a BS in Accounting from the University of Colorado Boulder. Hallie Buyle Hallie Buyle is a Chemical Engineer within the Systems Organization at Kansas City National Security Campus (KCNSC). Hallie began her career at KCNSC in the Materials Engineering organization, where she rapidly established herself as a Subject Matter Expert (SME) in Adhesives, Coatings, and Thin Films. Her technical contributions, specifically in materials production mitigation and advanced research, earned her an Outstanding Engineer Award in 2024. In 2025, Hallie transitioned to the Systems Engineering Organization to support technical, engineering efforts across a diverse range of product realization teams for several weapons programs. Beyond her technical responsibilities, Hallie has demonstrated leadership within her Young Professionals Employee Network, where she spearheaded initiatives focused on mentorship and knowledge transfer to support early career development. Hallie holds a degree in Chemical Engineering from Kansas State University. Outside professional pursuits, she is an avid K-State football fan and enjoys running, reading, and playing pickleball. Anna Case Dr. Anna Case is a research and development engineer at Sandia National Laboratories, where she leads the development of nondestructive evaluation for critical components and sub-assemblies. Leveraging multiple modalities including radiography, ultrasound, and emerging sensor technologies, her work spans the full spectrum of applications from advanced and exploratory to surveillance. Dr. Case routinely partners with mission stakeholders across the national security enterprise, coordinating cross-site collaborations that translate advanced nondestructive evaluation concepts into operational capabilities. She earned a Bachelor of Science in Electrical Engineering from Missouri University of Science & Technology and a Ph.D. in Electrical Engineering from Iowa State University. Nathan Clay Nathan Clay is a Program Manager for the Production System Maturation Integration Office at Los Alamos National Laboratory (LANL). In this role, he is responsible for organizing, evaluating, and integrating projects and efforts to improve manufacturing production systems. Nathan started at Los Alamos National Laboratory (LANL) in February 2023 and has over 20 years of professional experience in roles related to defense, operations, and management. Before joining LANL, he worked as the Oceania Desk Officer for US Army Pacific, managing Army teams and projects deployed throughout the Pacific. Nathan continues to serve as an Army Reservist. He holds a BS from the United States Military Academy at West Point, and Master’s Degrees from Liberty University and the United States Army War College. He also holds PMP and LSSGB certifications. Joshua Dise Joshua Dise is an interdisciplinary national security professional with expertise in systems engineering and emergency management. As an R&D Systems Engineer at Sandia National Laboratories, he leads Model-Based Systems Engineering (MBSE) implementation for a system modernization program, advancing nuclear deterrence through system architecture development, requirements engineering, and other model-based solutions. Joshua’s career at Sandia has encompassed multiple roles. Previously, as a national security systems analyst, he conducted cross-domain analyses and provided data-driven insights to support federal program strategy and execution. Earlier, as a technical hazard analyst and emergency planner, he led hazard analysis efforts using advanced modeling tools and oversaw data integration initiatives to enhance hazardous material operations, emergency response, and preparedness initiatives within Sandia’s comprehensive emergency management system. Joshua holds advanced degrees in Emergency Management and Public Health and is pursuing a Master’s in Systems Engineering at Florida State University. Andrew Roskos-Ewoldsen Andrew Roskos-Ewoldsen is a Postdoctoral Researcher at the Center for Global Security Research at Lawrence Livermore National Laboratory. He recently completed his Ph.D. in Political Science at the University of California, Davis, where his dissertation, "Do Unto Others: Reciprocity, International Security, and Individual Decision-Making," won the Merk Family Distinguished Prospectus Award. His research examines how psychological habits like reciprocity and fairness shape foreign policy attitudes, nuclear decision-making, and international cooperation, drawing on experimental and observational methods. He is a former Harry Frank Guggenheim Emerging Scholar, and his work has been supported by the Bilinski Educational Foundation and the American Political Science Association, with publications including the Journal of Conflict Resolution. He holds an M.A. from Seoul National University’s Graduate School of International Relations and a B.A. from Rhodes College. Andrew speaks English and Korean. Narin Fatima Dr. Narin Fatima is a Principal Member of the Technical Staff at Sandia National Laboratories, supporting the W80-4 Life Extension Program as part of the weapon component engineering team. She serves as the primary liaison for stockpile surveillance planning and enterprise supply chain risk assessment, and leads a multi-facility production quality monitoring initiative to ensure integrity of stockpile components. Her technical leadership spans final design qualification of nuclear deterrent components under lifetime environments, advanced material characterization to establish acceptance criteria for the National Security Campus, and predictive moisture modeling of hybrid structures to inform aging and compatibility. Prior to Sandia, she conducted failure analysis on commercial and military aerospace components at RTX Collins Aerospace. Dr. Fatima holds a PhD in Mechanical Engineering from the University of Wisconsin–Madison and collaborates with leading universities on extreme-environment materials, as well as with NNSA laboratories and AWE-UK on non-nuclear material platform. Ray Hughes Ray Hughes is an analyst in the Nonproliferation and Technology Security Program within Lawrence Livermore National Laboratory’s Z Program. His work focuses on assessing foreign entities and technology security risks across the civil and military sectors, with an emphasis on strategic technologies and organizations seeking access to dual-use goods. He also contributes to nonproliferation assessment statements supporting U.S. civil nuclear cooperation agreements. Previously, he was a research associate at LLNL’s Center for Global Security Research, where he examined nonproliferation concerns related to fusion energy. Ray is a U.S. Navy veteran with an M.S. in International Security from the Georgia Institute of Technology and a B.A. in International Affairs from Kennesaw State University. Sommer Johansen Sommer L. Johansen is a Senior Member of the Technical Staff in Systems Research and Analysis at Sandia National Laboratories in Livermore, California, where she uses structured decision analysis tools and scenario-based risk assessments to address ambiguous, data-scarce challenges across multiple national security domains including nuclear deterrence, CBRN resilience, and nuclear nonproliferation. Sommer enjoys working on complex problems that sit at the intersection of technology, decision-making, and human behavior with implications for both strategic and operational planning. She is especially interested in the connections between nuclear policy and emerging technologies. Previously, she was a Jill Hruby Postdoctoral Fellow at Sandia, where she led research in gas-phase chemical physics and atmospheric chemistry. She holds a Ph.D. in Physical Chemistry from the University of California, Davis, and a B.S. in Biochemistry from the University of Vermont. Patty Kast Patty Kast is a Nuclear Operations Systems Engineer and Senior Consultant at Los Alamos National Laboratory (LANL). Her work supports modernization of the plutonium pit production mission, a cornerstone of nuclear deterrence and stockpile stewardship. A retired U.S. Army Lieutenant Colonel, Patty brings 24 years of national security experience specializing in multinational security, countering global threats, and interagency coordination. She facilitated intergovernmental coordination across strategic theaters and represented the United States in multinational conferences, bridging operational nuclear security with allied policy engagement. Her military honors include the Legion of Merit, three Bronze Star Medals, and decorated for valor. Patty holds a B.S. in International Strategy with a Nuclear Engineering focus from the United States Military Academy, an M.A. from Webster University; she is a Project Management Professional and an FBI National Academy graduate. Patty looks forward to engaging with the PONI community on matters of nuclear modernization and deterrence strategy. Timothy Michael Krentz Timothy Michael Krentz is a federal program manager for the Dynamic Materials Properties program at the U.S. Department of Energy’s National Nuclear Security Administration. His program studies how materials respond under extreme conditions, and how those data support the nuclear security enterprise. Previously, he was a senior engineer at Savannah River National Laboratory, where he studied how hydrogen and tritium affect structural materials, along with fracture behavior, isotope transport, and metal additive manufacturing. His earlier research examined polymer composites and high-voltage insulation. Krentz has published across materials science, nuclear technology, and additive manufacturing and is a named inventor on patents related to advanced dielectric composites and hydrogen-isotope separation. He holds a Ph.D. in materials science and engineering from Rensselaer Polytechnic Institute and a B.S. in materials science from Lehigh University. Sara Lash Sara Lash is a mechanical engineer at Lawrence Livermore National Laboratory supporting the nation’s deterrent stewardship efforts. She has also served as an internal fellow at LLNL’s Center for Global Security Research, where she authored a policy primer on U.S. fusion energy development and commercialization, including supply chain challenges, proliferation implications, and the international competitive landscape. Her nuclear policy interests lie at the intersection of nonproliferation and emerging nuclear-adjacent technologies such as commercial fusion. She is pursuing a Master of National Security Policy at Duke University and holds a B.S. in Mechanical Engineering from California Polytechnic State University (San Luis Obispo) as well as a graduate certificate in National Security Affairs from Texas A&M University. Reed Pieper Reed Pieper is a research assistant for the Center for National Security and International Studies (CNSIS) at Los Alamos National Laboratory, supporting this CNSIS mission of bridging the technology-policy gap and advising senior laboratory leadership. Reed is a current master’s student at American University’s School of International Service, studying global governance and security. For his capstone research, Reed worked with State Department INR and Global Financial Integrity investigating deep water ports in Latin America of concern for US national security. He is also a University of California Institute for Global Cooperation and Conflicts (IGCC) Public Policy and Nuclear Threats (PPNT) Bootcamp alumni. His current area’s of research include great power competition, Indo-Pacific security, nuclear deterrence strategy, and drivers of intra-state conflict and instability. Cole Pruitt Cole Pruitt is a design physicist at Lawrence Livermore National Laboratory, where he joined the staff in 2022. As an analyst in Z Program, he conducts analysis of foreign nuclear threats to support senior policymakers and for nonproliferation. Cole also contributes to research efforts in physics modeling and code development, nuclear forensics, and nuclear reaction theory. Prior to his current role, he held a postdoctoral position in nuclear reaction theory at LLNL and led a series of experimental neutron scattering campaigns at the Los Alamos Neutron Science Center and the Triangle Universities Nuclear Lab. He holds a PhD in Chemistry from Washington University in St Louis and a ScB in Biophysics from Brown University. Bertrand Rollin Bertrand Rollin is a Design Physicist at Lawrence Livermore National Laboratory, where he leads the Modeling and Simulation team for the W87-1 x-ray survivability area, supports the annual assessment of the W87-0 system, and conducts nuclear weapon safety studies. He earned his Ph.D. in Mechanical Engineering from the University of Vermont in 2008, after completing two master’s degrees in Mechanical and Aerospace Engineering and Combustion Science from French institutions in Poitiers. Before joining LLNL, Bertrand served as an Assistant Professor of Aerospace Engineering at Embry-Riddle Aeronautical University, where he supervised graduate students and postdoctoral researchers. His career also includes postdoctoral positions at Los Alamos National Laboratory and a research faculty position at the University of Florida’s Center for Compressible Multiphase Turbulence. Outside of work, Bertrand enjoys cheering for his two boys competing in soccer and flying his family on weekend trips in their small airplane. Nicole Schoo Nicole Schoo supports the U.S. nuclear deterrent through the Pit Production Modernization program at DOE/NNSA. She manages the plutonium inventory and life-cycle of this strategic material that is vital to our nuclear stockpile. Nicole contributed to successfully meeting the goals to get to the First Production Unit (FPU) pit for the W87-1 and continues to support the ramp up to a rate production that this is essential to meet national security requirements. Nicole has experience that spans across Defense Programs including nuclear and strategic materials management, advancing and maturing new technologies in material processing and nuclear production operations, collaborating on a US/UK Joint Technology Demonstrator, as well as leading National Environmental Policy Act analyses and ensuring labs, plants and sites are fiscally supported by defending the Federal budget requirements to meet the mission need. Nicole is grateful to be a part of this national security mission. Thomas Stanton Thomas Stanton is a Research and Development Engineer at Los Alamos National Laboratory (LANL) in the Production Analysis and Transformation division. Thomas specializes in Agile matrix-based production modeling, policy, and decision support, with a specific emphasis on analyzing and optimizing both nuclear and non-nuclear component production. His other work focuses on waste production and management, environmental impact statements, medium and long-term planning, and logistics such as warehousing and transportation. His work supports a variety of groups across LANL, the nuclear enterprise, and various government agencies. Thomas has an M.S. in Finance from the Case Western Reserve University Weatherhead School of Management and a B.S. in Financial Engineering from Montana State University. Liv Stine Liv Stine is an Information Security Specialist at Sandia National Laboratories where she aids in projects ranging from federal driver revisions and policy implementation to alternative analysis exercises. Liv has several years of security experience across the government contractor sector supporting different federal departments and agencies. In each of her roles, she pushes for risk-based approaches by using policy analysis, creative problem-solving, and efficient collaboration that enables the mission’s tight timelines in a secure manner. Liv holds Bachelor’s and Master’s degrees in Political Science and National Security Studies. When not focusing on policy analysis, Liv can be found providing guidance to professionals on how to strategically plan, tackle challenging work environments, as well as better understand personal authority and capabilities. Sebastian Szustkowski Sebastian Szustkowski is a Staff Scientist at Los Alamos National Laboratory (LANL), where he works on the Dual-Axis Radiographic Hydrodynamic Test Facility (DARHT). His work centers on accelerator physics and the tuning, modeling, and optimization of DARHT’s Axis-II linear induction accelerator to enable expanded capabilities and support high-consequence experimental campaigns. He also contributes to the development of diagnostic tools and techniques used to evaluate and improve accelerator performance. Prior to joining LANL in 2021, he earned his Ph.D. in Physics from Northern Illinois University, where his dissertation research focused on nonlinear dynamics and accelerator diagnostics at Fermi National Accelerator Laboratory. At LANL, he supports the operation and continued advancement of one of the nation’s premier flash radiography facilities. Zakary Wilde Dr. Zakary Wilde is an R&D Engineer in the Advanced System Development group at Los Alamos National Laboratory, with over a decade of experience leading nuclear security enterprise efforts. His work spans strategic deterrence, requirements management, hydrodynamic simulation, shock physics, and advanced material diagnostics. Dr. Wilde currently leads nationwide collaborations, pioneers system engineering capabilities, and translates complex mission needs into executable technical pathways across the nuclear enterprise. He holds a Ph.D. and M.S. in Mechanical Engineering from Arizona State University and a B.S. from the University of Utah. Dr. Wilde is passionate about bridging advanced experimental engineering with strategic deterrence solutions.