Caitlin Dohrman

General Manager

Caitlin is responsible for the overall growth of Improbable’s U.S. Defense and National Security business and enabling our customers’ success using Improbable’s technology for national security challenges. Caitlin has worked in technology for 15 years, bringing innovative solutions to bear on U.S. defense and intelligence missions.

Prior to joining Improbable in 2018, Caitlin was an Enterprise Lead and Product Manager at Palantir Technologies, where she was responsible for the company's national security portfolio. Prior to Palantir, Caitlin worked at Booz Allen Hamilton and Intergraph as a systems engineer. She studied Computer Engineering at Mississippi State University and Systems Engineering at Virginia Tech.

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Mike Lee

Vice President, Technology

Mike leads the group developing Improbable’s technology, advancing synthetic environments and operationalizing the use of modeling and simulation. He’s spent 17 years providing thought leadership and developing innovative technology for the U.S. defense and intelligence community, specializing in military decision-making, intelligence preparation of the battlefield, data/system interoperability, and modernization initiatives.

Prior to joining Improbable, Mike was the VP of Engineering for Systematic, Inc., helping to establish the U.S. Army’s common operating environment for the command post and enabling the convergence of warfighting functions and domains. He studied Computer Engineering at Virginia Tech and Systems Engineering at George Washington University.

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Kathryn Harris

Vice President, Business Development

Kathryn leads a range of business development, strategy, and marketing functions at Improbable U.S. Defense & National Security. She’s a former Department of Defense official and has served in leadership and technology positions across government, industry, and academia. At the Pentagon she served as Senior Advisor to the 9th and 10th Vice Chairmen of the Joint Chiefs of Staff as well as Special Assistant to the 24th and 25th Secretaries of Defense, where she led and advised on the Department’s strategy, technology, and innovation initiatives.

Prior to Improbable, Kathryn served as Senior Vice President of Strategy and Growth at Govini and she also previously worked at SAIC. She currently serves as President Elect of the University of Virginia Engineering Foundation, and she was an Adjunct Professor for several years at Georgetown University’s School of Foreign Service. Kathryn studied Aerospace Engineering at the University of Virginia and Security Studies at Georgetown University.

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Mark Johnson

Head of Programs

Mark’s responsible for the successful execution of all external programs including government-funded projects and partner collaborations. He has over 15 years’ experience operating, developing, and managing mission critical software systems and applications in the U.S. Department of Defense and the intelligence community.

Mark joined Improbable in 2019 from Leidos, where he served as a Senior Program Manager for a portfolio of mission applications and programs of record supporting the IC, managing a team of over 200 software engineers, systems engineers, and other technical and programmatic functions. Previously, Mark worked at Lockheed Martin in a range of real-time mission operation, engineering management, and program management roles. He holds a B.S. in Aerospace Engineering from the University of Virginia and a M.S. in Systems Engineering from George Washington University.

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Jennifer McArdle

Head of Research

Jennifer McArdle leads Improbable U.S. Defense & National Security’s research activities and partnerships, serves as an Adjunct Senior Fellow at the Center for a New American Security in their defense program and wargaming lab, and as a Non-Resident Fellow with the Joint Special Operations University. She has over a decade worth of experience leading research initiatives within industry, academia, government, and the defense policy community.

Jennifer joined Improbable in 2020. A former professor, Jennifer has served on Congressman James Langevin’s cyber advisory committee and as an expert member of a NATO technical working group that developed cyber effects for the alliance’s mission and campaign simulations. Jennifer is a PhD candidate at King’s College London in War Studies, is the recipient of the RADM Fred Lewis (I/ITSEC) doctoral scholarship in modeling and simulation, and is a certified modeling and simulation professional.


Deborah Lee James

Chairman of the Board

Deborah Lee James served as the 23rd Secretary of the United States Air Force with responsibility for 660,000 military and civilian personnel and a budget of nearly $140 billion. She was the second woman to ever lead a military service in the United States. Prior to this role, she served as President of SAIC's Technical and Engineering sector, a $2 billion, 8,700-person enterprise, held various P&L positions, and worked in the legislative branch of government and the Department of Defense.

Secretary James has deep expertise in strategic planning, risk management, public policy, cybersecurity, space, logistics and innovation. She’s an accomplished speaker on business and government topics including issues in national security and world affairs, politics in Washington, business transformation leadership, mergers and acquisitions, cost-reduction strategies, and diversity and inclusion. Drawing on this wealth of experience, Secretary James helps organizations navigate through complex strategic and tactical challenges to achieve their goals, enhance performance and transform their businesses.

Michael G. Vickers

Board of Managers

Michael G. Vickers served as Undersecretary of Defense for Intelligence from 2011 to 2015, where he oversaw global counterterrorism efforts (including Operation Geronimo) and led the Defense Intelligence Enterprise that includes the National Security Agency, the Defense Intelligence Agency, the National Geospatial-Intelligence Agency, the National Reconnaissance Office, and the Defense Counterintelligence and Security Agency.

From 2007 to 2011, Dr. Vickers served as Assistant Secretary of Defense for Special Operations, Low-intensity Conflict, and Interdependent Capabilities. In this role, he was the Service Secretary for all U.S. Special Operations Forces and oversaw the Department’s strategic forces and conventional force transformation.

Dr. Vickers gained extensive operational experience during the first two decades of his career as an Operations Officer with the CIA and as a Special Forces Officer with the U.S. Army. He holds a Ph.D. in International Relations and Strategic Studies from Johns Hopkins University and an MBA from the University of Pennsylvania.

Michael Kratsios

Board of Managers

Michael joins Improbable having served as the fourth Chief Technology Officer of the United States at the White House. As President’s top technology advisor, he led the development and execution of the national technology policy agenda. Under his leadership, the White House reoriented U.S. national technology policy towards a primary focus on ensuring continued U.S. leadership in emerging technologies. Michael previously served as Acting Under Secretary of Defense for Research & Engineering, supervising all research, engineering, development, and prototyping at the Pentagon. Prior to joining the White House, Michael was a Principal at Thiel Capital, where he invested in and advised technology companies. He currently serves as the Managing Director at Scale AI, leading corporate strategy and helping accelerate AI applications across industries. Michael’s experience and understanding of emerging technologies make him a vital advisor to Improbable, guiding the defense business on how to provide unique value to the U.S. national security community.

Christine H. Fox

Board of Managers

Having served for eight years as Assistant Director for Policy & Analysis at the Applied Physics Laboratory at Johns Hopkins, Christine was appointed Senior Fellow in 2022. She also serves on the committee for the Division on Engineering & Physical Sciences for the National Academy of Sciences, on the oversight board for the U.S. Naval Institute, and the Federal Advisory Board for Palantir.

Prior to joining the APL, Christine was Acting Deputy Secretary of Defense, and before that Director of Cost Assessment & Program Evaluation. Her government service followed 28 years at the Center for Naval Analyses (CNA), where she oversaw analysis of operations stretching from the first Gulf War and NATO operations in Bosnia and Kosovo to the operations in Afghanistan and Iraq that followed 9/11. Christine’s brings a wealth of experience to Improbable regarding defense budget, programs, and global operations in our pursuit of enhancing the national security of our nation and its allies in the face of global competition and evolving threats.

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