About Daniel John Sennott

Dan Sennott, Co-Chair of Greenberg Traurig’s National Security Group, draws on nearly three decades of national security and defense experience to provide his clients with pragmatic, actionable advice on working with the Department of War and Congress. He represents clients across the full spectrum of the defense industrial base in public policy, government oversight, and regulatory matters. He routinely advises companies on appropriations, acquisition policy, advanced manufacturing, dual-use emerging technology, quantum communications, drone regulation, and government contracts. Dan regularly appears before the Department of War, each of the U.S. armed services, and the congressional defense and veterans’ affairs committees. His practice draws on more than two decades of military service and senior roles in the federal government.Dan advocates for clients on a range of defense-related regulatory and legislative matters in the national security, defense, health care, and veterans’ affairs sectors. In addition to representing large and medium sized defense contractors, he also counsels start-ups that are new entrants to the defense industrial base, providing advice on compliance, facility security clearance issues, and industrial security requirements. He also advises on congressional investigations and government oversight processes, helping clients understand and respond to the legal and policy dimensions of these proceedings.Before entering private practice, Dan served as the minority staff director for the U.S. House of Representatives Committee on Armed Services, where he was responsible for the development, negotiation, and passage of the annual National Defense Authorization Act. He previously served as the minority general counsel for the same committee, advising on national security law and congressional process, and as counsel and staff lead for the Military Personnel subcommittee. Dan served in the U.S. Army for more than twenty years as an armor officer and judge advocate, with assignments as a prosecutor, law professor, legislative liaison, and chief of military personnel law. His military decorations include the Legion of Merit, two Bronze Stars, and the Meritorious Service Medal.Concentrations•Defense and MILCON/VA Appropriations •National Defense Authorization Act (NDAA) •Compliance requirements for Department of War contracts •Dual-use emerging technology •Advanced manufacturing•Drone regulation, including Blue UAS •Congressional oversight and investigations •Defense Health Agency and Veterans Health Administration •Quantum communications •Military personnel policy, service member quality of life, and veterans’ issuesRecognition & LeadershipAwards & Accolades•Recognized, Military Officer’s Association of America (MOAA), “Col. Paul W. Arcari Meritorious Service Award,” 2019

Experience:

Representative Matters:

Advocated for a $300M Defense Appropriations add for advancement of biotechnology.; Advocated for a $150M Defense Appropriations add for AI-enabled advanced manufacturing.; Represented a major aerospace company in a Department of Defense audit and follow-on Congressional Oversight hearing.; Advocated for inclusion of NDAA provisions advancing domestic and U.S. ally drone companies.; The above representations were handled by Mr. Sennott prior to his joining Greenberg Traurig, LLP.; Government Experience: House Committee on Armed Services, 2015-2021; Republican Staff Director; Republican General Counsel; Counsel and then Staff Lead; Military Experience: U.S. Army, 1995-2015; Chief, Military Personnel Law, Office of the Judge Advocate General; Legislative Counsel, Office of the Chief Legislative Liaison; Deputy General Counsel, 82nd Airborne Division, including one-year deployment to Afghanistan; 1st Armored Division, including 16-month deployment to Iraq in support of Operation Iraqi Freedom; Senior Attorney, Friedberg Legal Center; Senior Attorney, 1st Brigade Combat Team; Platoon Leader, Company Executive Officer, and Battalion Supply Officer, 1st Infantry Division;

 

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Services

Areas of Law

  • Military Law 1
    • National Security
  • Contracts 1
    • Government Contracts
  • International Trade
  • Aviation Law 1
    • Aviation
  • Other 4
    • Government Law and Policy
    • Defense, Aviation and Space
    • Regulatory and Compliance
    • Space and Satellite

Experience

  • Bar Admission & Memberships
    Admissions
    Virginia
    2002, Illinois
    District of Columbia
    Not admitted in DC
    Memberships
    Professional & Community InvolvementBoard Member and Senior Fellow, National Defense Industrial Association, 2023-Present:Member, Standing Committee on Legal Assistance for Military Personnel, American Bar Association, 2022-2025
  • Education & Certifications
    Law School
    The Judge Advocate General's School
    LL.M.
    with Honors

    University of Illinois College of Law
    J.D.
    magna cum laude
    Other Education
    U.S. Army Command and General Staff College
    M.M.A.S.
    Homeland Security

    Marquette University
    B.S.
    Industrial Engineering

    Editor in Chief, University of Illinois Law Review

    Distinguished Military Graduate
  • Personal Details & History
    Age
    Born in 1973
    1973
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Attorneys FAQs

  • How many attorneys are in this law firm?
    Greenberg Traurig, LLP has 2750 attorneys at this location.
  • What law school did this attorney attend?
    Daniel John Sennott attended The Judge Advocate General's School and University of Illinois College of Law.
  • What year was this attorney's law firm established?
    Greenberg Traurig, LLP was established in 1967.