US Cyber Command Executive and Leadership Team

May, 2026

Leadership Overview

US Cyber Command has 10 executives leading key functions including strategy, operations, and technology.

Driven by national security imperatives, US Cyber Command provides the Department of Defense with essential cyberspace capabilities and critical support for cyber operations, safeguarding national interests in the digital domain.

Leadership Roles at US Cyber Command

  • Chief of Staff - Ken Paul
  • J0 Directorate, Cyber Command Chief of Staff (US) - Matthew Holly
  • Deputy Chief of Staff - Joe Gelineau
  • Chief of Staff (Special Staff) - John Schirrippa
  • Cyber Command Chief of Staff (US) - Maj Gen Bradley L. Pyburn
  • Director, Uscc of Communications & Chief Information Officer (J6) - Timothy Turner
  • J5 Deputy Chief of Staff - Sheri Fleming
  • J9, Acquisition & Technology Diectorate Chief of Staff - Katrina Streeter
  • Division Deputy Chief of Staff, Operations - Stephanie Gustafson
  • Chief Operations Officer - Christopher Assi
  • Ken Paul - Chief of Staff

    Ken Paul, the Chief of Staff at US Cyber Command, directs the strategic alignment of all staff functions, ensuring seamless execution of the command's mission. Paul oversees the coordination of critical operational planning and resource allocation, directly supporting the Department of Defense's cyberspace capabilities. This leadership role involves managing inter-directorate communications and fostering collaboration to enhance cyber operations. By optimizing internal processes, Ken Paul ensures the command operates with maximum efficiency and effectiveness. The Chief of Staff's purview extends to advising senior leadership on operational readiness and strategic initiatives, solidifying the command's position in national cyber defense. Paul's focus remains on driving operational excellence and maintaining a robust cyber posture for the United States.

    Matthew Holly - J0 Directorate, Cyber Command Chief of Staff (US)

    Matthew Holly, the J0 Directorate, Cyber Command Chief of Staff (US) at US Cyber Command, spearheads the integration of cyber capabilities across the Department of Defense. Holly directs the strategic planning and implementation of cyber operations, ensuring alignment with national security objectives. This pivotal role involves overseeing the development and deployment of advanced cyberspace tools and techniques. By managing cross-functional teams, Matthew Holly enhances the command's ability to provide critical assistance with cyber operations. The J0 Directorate, Cyber Command Chief of Staff (US) is responsible for driving innovation and maintaining a decisive edge in the cyber domain. Holly's leadership ensures the command's readiness to address evolving cyber threats and maintain U.S. superiority.

    Joe Gelineau - Deputy Chief of Staff

    Joe Gelineau, the Deputy Chief of Staff at US Cyber Command, supports the Chief of Staff in orchestrating the command's comprehensive operational framework. Gelineau focuses on enhancing the efficiency of cyber operations and the delivery of cyberspace capabilities to the Department of Defense. This position involves managing key initiatives that bolster the command's support functions and strategic objectives. By ensuring effective communication channels and resource management, Joe Gelineau contributes significantly to the command's overall effectiveness. The Deputy Chief of Staff plays a crucial part in the day-to-day management of staff activities, driving progress on critical projects. Gelineau's efforts are vital for maintaining the command's operational tempo and its ability to respond to cyber challenges.

    John Schirrippa - Chief of Staff (Special Staff)

    John Schirrippa, the Chief of Staff (Special Staff) at US Cyber Command, provides specialized oversight and strategic guidance for critical support functions. Schirrippa directs the integration of unique capabilities that enhance the command's cyber operations and cyberspace provision to the Department of Defense. This role demands a deep understanding of specialized cyber requirements and their alignment with broader military objectives. By managing unique staff elements, John Schirrippa ensures that specialized cyber needs are met with precision and expertise. The Chief of Staff (Special Staff) is instrumental in developing and implementing tailored strategies that address complex cyber challenges. Schirrippa's leadership ensures the command's specialized units are prepared for any cyber contingency.

    Maj Gen Bradley L. Pyburn - Cyber Command Chief of Staff (US)

    Maj Gen Bradley L. Pyburn, the Cyber Command Chief of Staff (US) at US Cyber Command, leads the strategic direction and operational execution of the command's cyber mission. Pyburn oversees the development and implementation of cyberspace capabilities, ensuring the Department of Defense receives robust support for cyber operations. This senior leadership position involves coordinating complex military cyber initiatives and fostering inter-agency collaboration. By driving innovation and maintaining high standards, Maj Gen Bradley L. Pyburn ensures the command remains at the forefront of cyber defense. The Cyber Command Chief of Staff (US) is responsible for the overall readiness and effectiveness of U.S. cyber forces. Pyburn's command ensures national security interests are protected in the digital realm.

    Timothy Turner - Director, Uscc of Communications & Chief Information Officer (J6)

    Timothy Turner, the Director, Uscc of Communications & Chief Information Officer (J6) at US Cyber Command, directs the command's information technology infrastructure and communication systems. Turner oversees the strategic deployment of secure communication networks essential for cyber operations and the provision of cyberspace capabilities to the Department of Defense. This role is critical for ensuring the integrity and availability of information systems supporting U.S. cyber defense. By managing technological advancements, Timothy Turner enhances the command's ability to conduct operations effectively. The Director, Uscc of Communications & Chief Information Officer (J6) ensures that all communication and IT functions are aligned with the command's mission. Turner's expertise is vital for maintaining a secure and resilient cyber environment.

    Sheri Fleming - J5 Deputy Chief of Staff

    Sheri Fleming, the J5 Deputy Chief of Staff at US Cyber Command, supports the strategic planning and policy development for the command's global cyber operations. Fleming focuses on enhancing the integration of cyberspace capabilities across various military branches and partner nations. This role involves coordinating international engagements and ensuring alignment with U.S. foreign policy objectives in the cyber domain. By managing complex policy frameworks, Sheri Fleming contributes to the command's ability to operate effectively on a global scale. The J5 Deputy Chief of Staff plays a key part in shaping the command's strategic posture and its approach to international cyber cooperation. Fleming's leadership ensures the command's policies support national security interests.

    Katrina Streeter - J9, Acquisition & Technology Diectorate Chief of Staff

    Katrina Streeter, the J9, Acquisition & Technology Directorate Chief of Staff at US Cyber Command, oversees the strategic acquisition and technological development supporting cyber operations. Streeter directs efforts to procure and integrate cutting-edge technologies that enhance the command's cyberspace capabilities for the Department of Defense. This position is crucial for ensuring the command possesses the most advanced tools to counter evolving cyber threats. By managing the technology lifecycle, Katrina Streeter ensures that acquisition processes are efficient and effective. The J9, Acquisition & Technology Directorate Chief of Staff is responsible for driving innovation in cyber technology. Streeter's focus on technological advancement strengthens the command's operational readiness and its ability to maintain cyber superiority.

    Stephanie Gustafson - Division Deputy Chief of Staff, Operations

    Stephanie Gustafson, the Division Deputy Chief of Staff, Operations at US Cyber Command, supports the execution of critical cyber operations and the delivery of cyberspace capabilities. Gustafson focuses on optimizing operational workflows and ensuring seamless coordination across various divisions within the command. This role is vital for maintaining the command's readiness and its ability to respond swiftly to cyber challenges. By managing operational planning and execution, Stephanie Gustafson enhances the overall effectiveness of U.S. cyber defense efforts. The Division Deputy Chief of Staff, Operations plays a key part in ensuring that all operational directives are implemented efficiently. Gustafson's contributions are essential for the command's sustained operational success.

    Christopher Assi - Chief Operations Officer

    Christopher Assi, the Chief Operations Officer at US Cyber Command, directs the day-to-day operational activities that underpin the command's cyber mission. Assi oversees the efficient deployment of resources and personnel to execute cyberspace capabilities and provide essential support for cyber operations to the Department of Defense. This leadership position is critical for ensuring the command functions with maximum efficiency and achieves its strategic objectives. By streamlining operational processes, Christopher Assi enhances the command's ability to adapt to dynamic cyber environments. The Chief Operations Officer is responsible for the overall operational tempo and effectiveness of the command. Assi's leadership ensures the seamless execution of cyber defense strategies.

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    Frequently Asked Questions Regarding US Cyber Command Top Executives and Leadership Team

    Who leads US Cyber Command?
    US Cyber Command is led by Ken Paul (Chief of Staff), along with executives such as Matthew Holly (J0 Directorate, Cyber Command Chief of Staff (US)) and Joe Gelineau (Deputy Chief of Staff).
    Who is part of US Cyber Command’s executive team?
    The executive team of US Cyber Command includes leaders such as Ken Paul (Chief of Staff), Matthew Holly (J0 Directorate, Cyber Command Chief of Staff (US)), Joe Gelineau (Deputy Chief of Staff) and other senior executives.
    How many executives does US Cyber Command have?
    US Cyber Command has 10 executives leading key business areas.
    What roles are included in US Cyber Command’s leadership team?
    The leadership team of US Cyber Command includes roles such as Chief of Staff, J0 Directorate, Cyber Command Chief of Staff (US), Deputy Chief of Staff, Chief of Staff (Special Staff), Cyber Command Chief of Staff (US).