Jeff Herren is CEO of Herren Associates, Inc., a firm dedicated to delivering mission-critical solutions and maximizing taxpayer value. Jeff began his career at Atlantic Research Corporation, where he developed and optimized advanced manufacturing processes for solid propellant rocket motors, composite materials, and propulsion systems supporting major defense programs. He later served as an engagement manager at Booz Allen Hamilton, leading strategic initiatives before founding Herren in 1989.
Under his leadership, Herren Associates partners closely with national security leaders to navigate complex acquisition challenges, manage multi-year defense procurements, and craft investment strategies designed to enhance warfighting capability and operational readiness.
Jeff is a Distinguished Fellow at Mississippi State University’s Bagley College of Engineering and previously served as an advisory board member at Virginia Tech. He holds a B.S. in Industrial Engineering from Mississippi State University and an MBA, with a concentration in finance, from the George Washington University’s School of Business.
Jeffrey M. Voth is the President of Herren Associates, Inc., an engineering and technology firm headquartered in Washington, D.C., dedicated to delivering critical outcomes and maximizing taxpayer value. Jeff began at Herren as a summer intern in 1998, joining full-time the following year. Early on, he was part of a multi-year joint industry-government team implementing high-performance computing solutions for demanding military environments—an effort recognized with the Defense Standardization Program Achievement Award.
Throughout his career, Jeff has led strategic and technical initiatives, including one of the largest independent analyses on forecasting effectiveness across 116 major defense acquisition programs. He regularly publishes insights on disruptive technologies transforming the defense industry and the economic impacts of global megaprojects, influencing dialogue at the intersection of technology and defense.
Jeff’s recognitions include “40 Business Leaders Under Forty” by the Washington Business Journal and multiple Inc. 500 awards, recognizing the most innovative and fastest-growing companies. He holds an MSc with distinction from St. Catherine’s College, University of Oxford, an MBA from Georgetown University, and a bachelor’s degree from the University of Massachusetts, Amherst.
Barbara Anderson is a Director at Herren, responsible for advancing mission-critical initiatives and maximizing taxpayer value through disciplined analytics and identifying key levers to improve program performance. Barbara advises senior defense leaders, catalyzing cross-agency and joint-force efforts to enhance operational effectiveness in complex environments.
Her recent work includes serving as an advisory panel member for Forward Defense at the Atlantic Council’s Scowcroft Center for Strategy and Security, addressing strategic concepts for improving the U.S. Navy’s decision advantage and effectively executing Distributed Maritime Operations (DMO) in increasingly contested maritime environments.
Barbara’s contributions have strengthened operational performance across multiple government agencies, including the U.S. Navy, U.S. Army, Department of Labor, Internal Revenue Service, and Federal Trade Commission. She currently serves as a Counselor at the Atlantic Council. Barbara holds a Bachelor’s degree from Michigan State University, a Master’s from American University, and professional certifications in Organizational Design, Change Management, and Design Thinking.
Ann Hawpe joined Herren Associates in 2003 and leads a team of engineers and analysts providing critical support to major U.S. Navy, Marine Corps, and Department of Homeland Security programs. She also serves as a Subject Matter Expert at the Defense Acquisition University, advising on course development focused on advanced cost analysis, risk, and uncertainty methods.
During her 20-year tenure at Herren, Ann has advised senior leaders across multiple Program Executive Offices, including PEO Ships, Submarines, and Integrated Warfare Systems (IWS). She also leads engagements with NAVSEA’s Cost Engineering & Industrial Base Analysis Directorate (SEA 05C) and the Naval Cost Agency (NCA) to strengthening cost analysis capabilities across the Navy.
Ann helps inform key program milestone decisions and improves cost and schedule performance across Major Defense Acquisition Programs through her depth of expertise in systems engineering, production planning, program control, and advanced performance improvement methods.
Ann is a Certified Cost Estimator/Analyst (C/CEA), Project Management Professional (PMP), and Lean Six Sigma Green Belt (LSSGB). She previously served as Programs Chair for the Washington Area Chapter of the International Cost Estimating and Analysis Association (ICEAA).
Ann holds a Bachelor’s in Industrial and Systems Engineering from Virginia Tech and holds a Master’s in Engineering Management and Systems Engineering from George Washington University.
Heath Marshall is a Senior Vice President at Herren Associates, bringing 20 years of experience advancing critical mission priorities for the U.S. Navy. A former Nuclear Surface Warfare Officer (SWO(N)), Heath’s naval career included serving as a Reactor Mechanical Division Officer aboard USS Theodore Roosevelt (CVN 71), leading complex reactor plant operations, post-overhaul assessments, and casualty-response scenarios, as well as additional leadership roles across multiple fleet and shore-based assignments.
At Herren, Heath leads a team advancing the design, technology, systems integration, and acquisition strategy for the Navy’s next-generation Large Surface Combatant, succeeding the Arleigh Burke-class after more than four decades in production. He was a primary author of the Naval Power and Energy Systems Technology Development Roadmap, aligning Navy, DoD, industry, and academia investments to accelerate emerging warfighting capabilities.
Previously at Deloitte and Booz Allen, Heath supported the Navy’s Science & Technology Enterprise portfolio management and assessed Total Ownership Cost (TOC) drivers for the VIRGINIA-class submarine program.
Heath holds a Bachelor’s degree from the U.S. Naval Academy, an MBA from the University of Maryland, and is a certified Project Management Professional (PMP).
Andreya Dalianis is a Senior Vice President at Herren Associates, with over 20 years equipping decision-makers with actionable insights to improve readiness and enhance warfighting capability. She advises defense leaders, leading teams to deliver clarity in the face of complexity through rigorous analysis.
At Herren, Andreya recently worked with Navy leadership in establishing a new program office within the Program Executive Office for Unmanned and Small Combatants (PEO USC), integrating U.S. Navy and Foreign Military Sales (FMS) Boats, Combatant Craft, Service Craft, and Seaborne Targets across three distinct product lines. She also led critical production efforts within PEO Ships’ Auxiliary and Special Mission Shipbuilding Office, including T-AO 205, NGLS, T-ARC(X), T-ATS, T-AGS, NOAA NAV, and T-AGOS(X) classes.
Previously at Deloitte, Andreya directly supported the Office of Naval Research (ONR), driving efficiency throughout the Navy’s Science & Technology (S&T) Enterprise through Zero-Based Budgeting (ZBB). She also strengthened internal controls for the Navy’s Financial Improvement and Audit Readiness (FIAR) program by quantifying operational gaps, identifying risks, and implementing control activities to improve auditability and resource allocation.
Andreya holds a Bachelor’s degree from James Madison University and is a certified Project Management Professional (PMP).
Tom Sullivan is a Vice President at Herren Associates with more than 18 years of experience delivering data-driven analytics and insights that drive mission-critical impact. His expertise includes cost engineering, industrial base analysis, predictive analytics, data visualization, and the strategic application of generative and agentic artificial intelligence to address complex national security challenges.
At Herren, Tom leads diverse teams supporting the Program Executive Office for Unmanned and Small Combatants (PEO USC) and NAVSEA’s Directorate for Surface Ship Maintenance, Modernization, and Sustainment, working directly with senior leaders on strategies to enhance Fleet readiness, resource alignment, and warfighting capability. He recently led a comprehensive bridge navigation assessment of non-nuclear surface ships, translating insights from 73 ships into actionable recommendations for Navy leadership.
Previously at PwC, Tom strengthened financial controls and risk management frameworks for federal clients, including the U.S. Department of the Treasury.
Tom holds an MBA from Loyola University Chicago, a bachelor’s degree from the University of Notre Dame, and certifications as a Project Management Professional (PMP), Certified Cost Estimator/Analyst (CCEA), and Certified Scrum Master (CSM).
Tim Voth is a Vice President at Herren Associates, leading the firm’s Engineering Innovation capabilities. With over 15 years of experience, Tim delivers analytical rigor, implements digital engineering best practices, and rapidly advances warfighting capabilities through disciplined systems engineering and integration processes.
At Herren, Tim supports the PEO IWS Rapid Capability Office, accelerating the prototyping and deployment of Counter-Unmanned Aircraft System (C-UAS) capabilities. He previously led efforts to pilot and deploy the AEGIS Virtual Twin system aboard Navy ships, successfully enabling end-to-end live-fire engagements during ship qualification trials. Tim also helped establish the Combat System Test Bed (CSTB), a federated modeling environment assessing critical Anti-Air Warfare (AAW), Integrated Air and Missile Defense (IAMD), and Ballistic Missile Defense (BMD) capabilities, laying the foundation for scalable, multi-mission performance assessments.
Prior to joining Herren, Tim worked at Northrop Grumman (formerly Orbital/ATK), evaluating applications for the Guided Advanced Tactical Rocket (GATR), a precision-guided strike system employing semi-active laser guidance against fixed and moving targets.
Tim holds a Master’s degree in Systems Engineering from the University of Virginia, a Bachelor’s from Virginia Tech, and is a certified Agile Practitioner (PMI-ACP).