He also attended seminars from the Massachusetts Institute of Technology and University of North Carolina at Chapel Hill.

His career has included numerous operations and staff positions in Air Force Space Command, the National Reconnaissance Office, the Air Force Secretariat, United States European Command and the Office of the Secretary of Defense.

May 1992 – July 1992, Student, Undergraduate Space Training, Lowry Air Force Base, Colorado 2.

July 2009 – June 2011, Chief, Missile Defense Division, Strategy, Policy, Partnering, and Capabilities Directorate, U.S. European Command, Stuttgart-Vaihingen, Germany 12.

June 2011 – July 2013, Chief of Staff of the Air Force Fellow, with duty as Director, Space Policy Implementation, Office of the Deputy Assistant Secretary of Defense (Space), Office of the Under Secretary of Defense for Policy, the Pentagon 13.

February 2016 – August 2018, Director, Space Policy, National Security Council, Executive Office of the President, Washington, D.C. 16.

December 2019–August 2020, Director of Strategic Requirements, Architectures and Analysis, Headquarters U.S. Space Force, Peterson AFB, Colo. 18.

August 2020–August 2022, Deputy Chief of Space Operations for Strategy, Plans, Programs, Requirements, and Analysis, United States Space Force, the Pentagon, Arlington, VA. After retiring, Liquori founded Polaris Strategic Insight, LLC, a consulting and mentoring firm for aerospace organizations and individuals.