Defense IT Summit

Jake is the Deputy Assistant Secretary of War for Science and Technology Foundations. In this role Jake serves as the principal advisor to the Under Secretary of War for Research and Engineering (USW(R&E)) on matters related to S&T, developmental prototyping, and experimentation, acting as a crucial link between fundamental scientific discovery and its strategic application in defense. Jake served as the Senior Technical Advisor to the Assistant Secretary of Defense for Research, Development and Acquisition (ASN RD&A). In this role Jake was responsible for implementation of Modular Open System Architecture (MOSA) and Artificial Intelligence (AI) as well as rapid acquisition in the Department of Navy and the Marine Corps. Jake previously served as Director of Advanced Capabilities for the Conventional Prompt Strike (CPS) Program. He was responsible for developing and integrating critical new technologies in conjunction with the US Army and DARPA into the CPS platform with an annual budget of over $60M. Jake served as a Program Manager at the Strategic Capabilities Office (SCO) in Artificial Intelligence (AI) and Unmanned Systems transitioning critical technology to the warfighter and Program Lead for Team Submarine Project Turing rapidly introducing AI into the undersea domain with a total budget of $140M. Jake served as the Assistant Program Manager (APM) for Submarine Combat Future Development and the Payload Control System (PCS) in NAVSEA PEO Submarine with an annual budget of over $30M. His portfolio as APM included all Payload control and integration including unmanned vehicles, missiles and torpedoes for the BYG-1 Combat Control System and the Common Weapon Launchers (CWL). In his future development portfolio Jake was the Program Manager for the Submarine Launched Unmanned Aerial System (SLUAS) providing command and control as well as a Virtual Twin Combat System for the US and Australian Submarine Force.

Jake served as the SEA05 System Design Manager (SDM), Technical Warrant Holder and Chief Engineer for a SCO program in the Unmanned Maritime Systems Program, PMS 406 Program Office. Jake has extensive Naval Engineering experience from with the Remote Minehunting System (RMS) as the lead software engineer and extensive submarine development and engineering experience with the BYG-1 Submarine Combat Control System.

Jake’s first job with the Department of the Navy was a CO-OP at Lockheed Martin Moorestown during his undergraduate study at Drexel University in Philadelphia spending three years working Aegis Ballistic Missile Defense in charge of test development and simulations of the combat system capability. Upon graduating Jake joined the Federal Service at the Naval Surface Warfare Center Carderock Division Hydrodynamics group spending 4 years as the In Service Engineering Agent (ISEA) for the Seawolf Class Submarine Ship Control System and Data Distribution System.

Jake first came to the Naval Sea Systems Command (NAVSEA) in 2011 serving as the lead software engineer for the RMS and AN/AQS-20A sonar system. From 2012 to 2014 he served as lead engineer of the Submarine Weapon Control System and head of the Open Architecture initiative for the BYG-1 Submarine Combat Control System.

Jake has received several NAVSEA awards including a NAVSEA Innovation Award over his career for innovation and excellence in engineering. Jake was recognized as Engineer of the Year (2020) by ASNE and has been published by the Naval Submarine League on Combat Systems of the Future. He has a Bachelor’s of Science (BS) in Computer Engineering from Drexel University, a Master’s of Science (MS) in Systems Engineering from The George Washington University, a Master’s in Business Administration (MBA) from the University of Maryland and is completing a Masters of Arts (MA) in Strategic Studies at the Naval War College.

Michael Frank is the Deputy CTO at the Department of the Navy.

Mr. Christopher Wallace serves as the Chief of Cybersecurity for the Program Executive Office, Defense Healthcare Management Systems, where he leads the organization in innovating and modernizing efforts for a stronger and better protected enterprise. He leads a team charged with fortifying the nation’s health care management systems, anchored on a strategic blend of information security and network security. His application of rigorous policies and proactive strategy drives PEO DHMS to preempt adversarial threats, contributing to the safeguarding of critical infrastructures and bolstering national security.

In 2019, Mr. Wallace joined PEO DHMS as the lead Information System Security Manager. Before joining PEO DHMS, he worked for the Defense Forensics and Biometrics Agency, where he worked to rebuild and strengthen a cyber program that was charged to protect national security. His career includes working for Aberdeen Proving Ground, where he ran cybersecurity compliance at the Regional Network Enterprise Center preparing and inspecting military installations for the Command Cyber Readiness Inspections. He also worked for the Department of Defense at the Network Enterprise Center Fort Detrick, MD. He served nearly 10 years in the US military as an Infantryman.

Mr. Wallace holds an M.S. in Strategic Information and Cyberspace Studies from the National Defense University, an M.S. in Computer and Information Systems Security/Information Assurance from Capitol Technology University.

David Raley is the Chief Digital Business Officer at Marine Corps Community Services (MCCS), where he leads enterprise-wide digital transformation initiatives that directly impact the quality of life for Marines and their families. As the founder of MCCS’s innovation capability and the architect behind its customer experience (CX) modernization strategy, David has redefined how mission-critical services are delivered across the Marine Corps.

He is the visionary behind Operation StormBreaker, a pioneering DevSecOps and pipeline-as-a-service framework that accelerates secure software delivery across the Department of Defense. Under his leadership, MCCS achieved the Marine Corps’ first authority-to-operate (ATO) via automated continuous delivery—setting a new benchmark for speed, compliance, and agility in government software development.

David’s work has been featured in FedScoop, Federal News Network, GovCIO Media & Research, and the ATARC Federal IT Newscast podcast, where he shares insights on agile ATOs, CX innovation, and cloud modernization. His efforts have saved MCCS an estimated $100K per application per month by reducing the cost of delay and streamlining acquisition and accreditation processes.

A frequent speaker at DoD and federal IT events, David brings a mission-first mindset to every conversation—bridging the gap between emerging technology and operational impact.

Ms. Keely A. Galloway is currently the Senior Advisor for Supply Chain within the office of the Assistant Secretary of War for Sustainment. She serves as OSW’s primary senior advisor and technical expert on inventory and equipment management matters and is responsible for the development, coordination, implementation, execution, and maintenance of policies, processes, procedures, and performance measures for all Department of War (DoW) supply and equipment management activities. Her scope of work impacts global end-to-end supply, equipment, and logistics support for military missions and materiel management within the DoW. She has 26 years of experience in DoW Supply Chain Management.

John Repici is the Director of the Vulnerability Disclosure Program at DC3.

Private Humr reported to Parris Island, South Carolina for recruit training in April 1998. Upon graduating as the platoon honor graduate, Private First Class Humr subsequently graduated from Marine Combat Training and Basic Combat Engineer Course as the class honor graduate. Lance Corporal Humr reported to Company A, 7th Engineer Support Battalion as a combat engineer in the bridge platoon. In 2000 Lance Corporal Humr reported to the 13th Marine Expeditionary Unit (MEU) where he was meritoriously promoted to corporal and sergeant. He deployed with the 13th MEU from July 2000 to February 2001 where he participated in OPERATION: Determined Response to support the recovery of the USS Cole in Aden, Yemen. Upon returning from the MEU, Sergeant Humr reported to the 1st Force Service Support Group as the G-4 Construction Chief. In 2002 Sergeant Humr was selected for the Marine Corps Enlisted Commissioning Education Program and attended The University of New Mexico where he was promoted to staff sergeant in 2005 and commissioned as a second lieutenant in May 2006.

Second Lieutenant Humr reported to The Basic School in July 2006 and reported to the Ground Supply Officers Course where he graduated as the honor graduate. Second Lieutenant Humr reported to 7th Marine Regiment where he served as the Regimental and Headquarter Company supply officer from May 2007 to January 2009 where he participated in several overseas Maritime Prepositioning Force offload exercises. From January 2009 to May 2011 First Lieutenant Humr served with 3d Light Armored Reconnaissance Battalion and deployed in support of OPERATION: Iraqi Freedom and OPERATION: Enduring Freedom as the Battalion Supply Officer. Captain Humr reported to the Naval Postgraduate School (NPS) in June 2011 for the Special Education Program. While at NPS Captain Humr graduated Naval War College as a distinguished graduate and completed the Expeditionary Warfare Distance Education Program. Captain Humr earned his Master’s of Science in Information Technology Management from NPS with distinction in 2013. Captain Humr reported to I Marine Expeditionary Force (I MEF) in October 2013 as the Information Systems Officer. From January 2014 through November 2014 he deployed with I Marine Expeditionary Brigade-Afghanistan in support of OPERATION: Enduring Freedom as the Information Systems and Management Officer. Upon returning to I MEF, Captain Humr served as the Information Systems Officer and participated in exercises such as Balikatan 2015 in the Philippines and Dawn Blitz in southern California. Major Humr was selected to attend Marine Corps Command and Staff College (CSC) by the Commandant’s Education Board and was promoted in June 2016 to Major. Upon graduating from CSC with a Masters in Military Studies, Major Humr reported to Manpower Management Officer Assignments branch where he served as the Graduate Education Manager from June 2017 through June 2019. Major Humr then served as the Deputy Director of Logistics for Task Force 51/5th Marine Expeditionary Brigade in July 2019 to July 2020. While in Bahrain, Major Humr was selected for the Commandant’s Doctor of Philosophy Program-Technical (PHDP-T) to start in September 2020. Major Humr was promoted to his LtCol rank in August 2021 and graduated with a Ph.D. in Information Sciences in September 2023 where he studied human decision-making supported by artificial intelligence. The title of his dissertation was: Temporal Evolution of Trust in Artificial Intelligence-Supported Decision-Making. Upon graduation, LtCol Humr completed a three-month DARPA Service Chief’s Fellowship in early 2024 and then became the Director of the Marine Corps’s Intelligent Robotics and Autonomous Systems Office through October 2025. He currently serves as the Division Chief for Science & Technology for the Joint Interagency Task Force 401.

Lieutenant Colonel Humr’s personal decorations include Meritorious Service Medal with gold star in lieu of second award, Navy Commendation Medal with gold star in lieu of second award, and Navy Achievement Medal with four gold stars in lieu of fifth award. He is married and has three children.

Major Christopher D. Clark enlisted in the Marine Corps in 2008. His initial assignment was with the Headquarters & Headquarters Squadron Futenma, where he served as a Financial Analyst until 2010. He then moved to Marine Corps Forces Pacific, holding the position of Budget Chief until 2013, where he was responsible for overseeing financial transactions worth $38 million annually.

In 2012, Major Clark completed an Associate of Arts in General Studies at Hawaii Pacific University, which assisted in his selection for the Marine Enlisted Commissioning Education Program. He continued his education at The Ohio State University, earning a Bachelor of Science in Physics in 2016, followed by commissioning as a Communications Officer in the Marine Corps.

Major Clark served as the Staff Communications Officer (S-6) for Marine Aircraft Group 24 (MAG-24) from 2017 to 2021. In this role, he managed the communications requirements for the Group and its seven Squadrons in garrison, exercise, and deployment requirements across the Pacific Region to include multiple Marine Corps Rotational Forces Darwin deployments, exercises in South Korea and the Philippines, and Service Level Training Exercises as the Aviation Command Element S-6.

Major Clark obtained a Master of Science in Cybersecurity Management and Policy from the University of Maryland Global Campus in 2020 while working as the MAG-24 S-6, complementing his military duties and expertise in the field of information security.

Major Clark was then selected to attend the Naval Postgraduate School, graduating in 2023 with a Master of Science in Computer Science, specializing in Artificial Intelligence. For his thesis, he created a novel adversarial example attack using the A* Search algorithm that creates adversarial images that cause deep neural networks to misclassify images with minimal added noise. This thesis involved significant work in building, training, and attacking advanced machine learning models in white and black box settings.

Currently, Major Clark is the Marine Corps Deputy Commandant for Information, Service Data Office Artificial Intelligence Lead Officer, a role that utilizes his extensive academic background and experience in the Marine Corps. He is the author of the USMC Artificial Intelligence Strategy, is leading the development of the USMC Artificial Intelligence Implementation Plan, and is a Doctor of Engineering in Artificial Intelligence candidate at George Washington University.

Jaques Reifman, Ph.D., is a Department of Defense (DoD) Senior Research Scientist and a member of DoD’s Civilian Senior Executive corps. He serves as the Director of the DoD Biotechnology High Performance Computing Software Applications Institute, which he created to leverage the use of computation, including predictive analytics, AI and machine learning, bioinformatics, and systems biology, in support of DoD’s basic and applied research efforts. He establishes multi-institutional, interdisciplinary research teams and leads them to develop solutions to optimize and enhance Warfighter performance, as well as to prevent, diagnose, and treat military- relevant injuries and diseases. One of his most impactful works was the establishment of personalized prediction models that help reduce the risk of non-battle injuries and enhance Warfighter performance.

Prior to coming to Fort Detrick in 2001, Dr. Reifman was a Section Manager at the U.S. Department of Energy’s Argonne National Laboratory, where he conducted and led basic and applied research in computational methods, AI, advance control algorithms, and statistical pattern recognition.

Dr. Reifman received his Ph.D. in Nuclear Engineering from the University of Michigan, Ann Arbor. He has authored more than 300 peer-reviewed technical articles, holds 14 U.S. patents, has licensed two AI software applications, and cleared with the FDA the first AI-enabled Software as a Medical Device developed by the DoD. He serves on multiple review and advisory boards, including NASA, CDC, and DARPA, and is an Associate Editor of the journal BMC Bioinformatics. He is the recipient of three Presidential Rank Awards, the Mark Mills Award, R&D 100 Award, Arthur S. Flemming Award, Army R&D Achievement Award, Superior Civilian Service Award, and was elected to the Order of Military Medical Merit. In 2016, Dr. Reifman and the APPRAISE Team received the prestigious Samuel J. Heyman Service to America Medal (“Sammies”) for Science and Environment.

Lieutenant Colonel Benjamin Pimentel is a Marine Corps Communications Officer currently assigned to Project Dynamis where he leads Assured Command & Control (C2). His operational experience includes assignments deploying tactical communications in Afghanistan, Japan, and the Republic of Korea. His research and development experience includes tours at the Office of Naval Research (ONR) and the Office of the Undersecretary of War for Research and Engineering (OUSW(R&E)). He holds a B.S. from the U.S. Naval Academy, an M.S. in Electrical Engineering, and a Ph.D. in Information Sciences, both from the Naval Postgraduate School.

Guy Kiyokawa is the Leidos VP and Account Manager for the DoD Personnel & Readiness and Military Health System.

He received U.S. Senate confirmation and was sworn in on Nov 4, 2021, as the Assistant Secretary for Enterprise Integration in the Department of Veterans Affairs serving until January 2025. From April to September 2023, he stepped in as the Acting Deputy Secretary.

Kiyokowa has led many large health organizations through transitions and changes re-focusing their efforts to align with strategic goals including US Army health facilities planning, Army medical center / health clinics, and the Defense Health Agency where he brought together medical services across the Army, Navy, and Air Force into a single function supporting service members and their families.

He began his career in the United States Army as a Medevac pilot and proceeded to serve over 29-years as an active-duty Medical Service Corps officer focusing on health facility construction and hospital administration. Following his retirement from active duty, Guy joined the Senior Executive Service and served as the Deputy Director of the Defense Health Agency (DHA), which is responsible for health delivery for service members, their families, and retirees.

He graduated from the University of Southern California with a bachelor’s degree in civil engineering and Baylor University with a master’s degree in health administration. He was born and raised in Honolulu, Hawaii and resides in Vienna, Virginia.

Bryan Thomas is Vice President of Public Sector Sales at Pure Storage, where he leads the company’s efforts to accelerate growth and innovation across the U.S. Federal and SLED (state, local, and education) markets. Since joining Pure in July 2024, Bryan has brought renewed focus and cohesion to the public sector team, aligning with enterprise and commercial business units to drive strategic expansion. With a strong track record of leadership and results, he is guiding Pure’s mission to empower government agencies through data-driven transformation.

Prior to Pure, Bryan served as Managing Director for the U.S. Department of Defense at Google, where he led teams and strategy to deliver cutting-edge cloud and AI solutions to some of the Federal government’s most mission-critical initiatives. Earlier in his career, Bryan spent 22 years at World Wide Technology (WWT), where he led their Federal and SLED organizations as Executive Vice President. He was instrumental in building WWT’s go-to-market strategy, forging deep relationships with customers and partners, and launching the Washington, D.C. Innovation Center. His leadership earned him multiple honors from FedScoop, including the Industry Leadership Award and recognition as one of the Best Bosses in Federal IT.

With more than two decades of experience and a reputation for big wins, Bryan brings unparalleled public sector expertise, a collaborative mindset, and an extensive network to Pure Storage helping agencies modernize infrastructure, reduce complexity, and unlock the full value of their data.

Before joining Cohesity Marlin was the Federal CTO at Riverbed Technologies. Where he brought more than 25 years of engineering, leadership and technology experience leading technical initiatives. He is a strategic and supportive voice for customers, partners and team members, and helped ensure successful solution delivery. In his role, he explored emerging technologies, advised on development, and recommended strategies through research and collaboration with business and technology leaders across the company and public sector organizations.

Prior to taking on the role of CTO, Marlin was the Technical Director of the Advanced Technology Group in the Office of The CTO, responsible for being the subject matter and industry expert to the world’s largest and most complex customers. As well as at Circadence, as a Software Engineer, Solutions Architect and ending as their Systems Engineering Manager leading the engineering teams for both commercial and government business units.

An empathetic and engaged leader, Marlin refuses to limit himself to the more traditional constructs of the C-suite. As an Army veteran, he is a self-taught technologist and transformed his personal technical curiosity into one of the leading voices in the Federal IT community. He makes himself readily available and accessible to colleagues, partners, and customers to tackle some of the most difficult challenges in IT, breaking down difficult concepts to empower integrated teams and helping government customers achieve mission success.

Stephen Gordon is a Strategic Accounts Director for DOD at Red Hat. Stephen has established himself as a pivotal figure in bridging cutting-edge technology with complex national security challenges. Previously, Stephen held several leadership and innovation centric roles at IBM, Salesforce (Aerospace & Defense), and Microsoft including the founder of Studio Alpa, a specialized wargaming studio within Microsoft Halo Studios, creating an AI powered wargaming platform for US Department of Defense planning, training, and global operations.

With an exceptional track record of building disruptive software for the US Department of Defense, Joint Agencies, NATO, Stephen specializes in discovering, incubating, and delivering AI-powered solutions that provide critical decision advantages in high-stakes conflict environments. Stephen is a Fellow at The Institute for the Study of War in Washington, D.C. with recognized expertise in contemporary conflict and emerging technologies, open-source intelligence, wargaming, counter-disinformation campaigns, and multidomain operations in extreme climate environments. Previously, Stephen was co-founder of the Industry Working Group on Cyber-Security Policy & Technology with The Brookings Institution in Washington, D.C.

Trusted advisor to senior defense community leadership, Stephen works closely with private sector including corporate venture groups, private equity firms, defense-technology startup founders, and established brands as diverse as Bugatti, Palantir, Disney, Lockheed Martin, Google, Waymo, NVIDIA, forging new partnerships to creating innovative solutions that enable new growth opportunities, entering new global markets, and delivering innovative AI powered applications, products and services.

Srini Iyer is Senior Vice President and Chief Technology Officer for the Leidos Health and Services Sector. His current role includes providing leadership across a wide range of technology challenges supporting sector’s diverse portfolio. He is responsible for oversight of tech investments, driving technology partnerships, and leading a talented tech team.

Mr. Iyer has more than 30 years of experience in developing and managing complex enterprise solutions in defense, health care, finance, and telecommunications. Prior to his current role, he led ManTech’s Innovation and Capabilities Office as Corporate CTO, spearheading the company’s strategy to meet and exceed customers’ complex mission requirements with leading-edge technologies. He led a team charged with developing and harnessing the power of tomorrow’s disruptive technologies to shape the world for the better.

Prior to joining ManTech in 2015, Mr. Iyer served as Director of Technology at Northrop Grumman, where he crafted solutions for customers including the Defense Department, Department of Homeland Security, and other federal agencies. He managed a large independent research and development portfolio and oversaw the development of solutions for customers’ most complex and important problems, particularly through creating strategies for two of the company’s key growth initiatives in cyber and cloud.

He earned a Master of Science in computer engineering from the University of Texas at Austin and a Bachelor of Science in electrical and electronics engineering from the University of Madras. He holds executive leadership certificate from Darden School of Business, University of Virginia.