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Mr. Sinclair has more than 20 years in the defense industry in positions of increasing responsibility. He founded Margin Consults in 2013. Prior to establishing Margin Consults, Mr. Sinclair was the Vice President of the Warfighter Support Division of MacAulay-Brown Inc.

Previously, Mr. Sinclair was the General Dynamics – Information Technology’s Staff Vice President for Business Development in the Aviation and Joint Solutions Sector. Before joining GDIT he was the Hampton Roads Area Manager and Program Manager for the Command and Control Research Program (CCRP) for Evidence Based Research, Inc. Prior to that, Mr. Sinclair worked for General Dynamics –Advanced Information Systems. While with General Dynamics he participated in communications and computer assessments for United Nations Humanitarian organizations including the UN High Commissioner for Refugees (UNHCR), and the UN Department of Humanitarian Affairs (DHA). He participated in the development of the Chairman Joint Chief of Staff’s Joint Vision 2010. He was an analyst and Program Manager at the Joint C4ISR Battle Center (JBC) and Program Manager for Joint Experimentation work in support of US Joint Forces Command. He was also the Program Manager for work in support of Air Combat Command and Allied Command Transformation.

Mr. Sinclair’s academic background includes a Bachelors degree in History, Masters degrees in International Relations and National Strategic Studies, and he is a graduate of the Marine Corps' Basic and Advance Command and Control Systems Course and the Naval War College. He is a retired Lieutenant Colonel in the United States Marine Corps where he served as a Command and Control Systems officer for more than twenty-five years.

Mr. Sinclair's military experience included command of the Marine Communications Detachment, USS Mount Whitney and Marine Corps Detachment, Fort Lee Virginia. His operational assignments included duty as the communications officer of a Marine Amphibious Unit, Marine Expeditionary Brigade, and Marine Amphibious Force (Nucleus), Infantry Battalion, Infantry Regiment, and Marine Division. He has served in staff communications and computer systems assignments at Headquarters Marine Corps, US Forces Japan, and US Marine Corps Forces, Atlantic. His operational experience includes Vietnam, Central America, Haiti and the Balkans.

Mr. Sinclair's professional affiliations include the, the Armed Forces Communications Electronics Association (AFCEA), Tidewater Area Service Contractors Association (TASC), National Defense Industry Association (NDIA), Marine Corps Association, and Marine Corps League.

Mr. Sinclair's publications include:

Underpinning the RMA - Advancements in the Transformation of Information into Knowledge for Command and Control - Proceedings of the Command and Control Research and Technology Symposium, CCRP, 1999

Building up a Common Data Infrastructure - Proceedings of the Studies, Analysis and Simulation (SAS) Panel of the Research and Technology Organization (RTO) Symposium on Analysis of the Military Effectiveness of Future C2 Concepts and Systems, NATO, 2002

NATO Code of Best Practice for Command and Control Assessment - (contributing author and editor) - CCRP, October 2002