• Provides overall governance, strategic planning, policy, and oversight of policy implementation and general processes within SISO.
• Ensures SISO adheres to the general Operating Principles defined in Section 2.0 of the Policies & Procedures.
• Ensures the professionalism of the Product Development activities of SISO, and compliance with the formal product development processes.
• Ensures the relevance and usefulness of the meeting events of SISO, especially of the annual Simulation Innovation Workshops.
• Ensures the sound management of SISO activities.

Members and Officers

There are eleven elected members of the EXCOM, nine elected at large and the elected Chairs of the SAC and CC. The nine at-large members of the EXCOM are elected to three-year staggered terms with approximately one-third of these expiring each year.  The Chair of the EXCOM may, with the agreement of the other elected EXCOM members, appoint up to two additional SISO members to the EXCOM for a one-year term. Both elected and appointed members of the EXCOM are voting members.  Each year, the EXCOM elects from its membership a Chair, a Vice Chair, and a Secretary, each of whom serve a term of one year.

EXCOM Liaisons

In recognition of their close working relationship with SISO, the NATO Modelling & Simulation Group (NMSG) has a liaison who serves as a non-voting member of the EXCOM. 

Current Members of the EXCOM

Chair - Dr. Katherine Morse, JHU/APL (Feb 2027)
Vice Chair - Mark McCall, Retired (Feb 2026)
Secretary -
Grant Bailey, UK MoD (Feb 2027+)
Zack Crues, NASA (Feb 2026+)
Damon Curry, Pitch Technologies (Feb 2027+)
David Drake, Drake & McTrowell Research Laboratory, (SAC Chair)
Paul Gustavson, SimVentions (Feb 2025)
Christopher Metevier, U.S. Army DEVCOM-SC STTC (Feb 2026)
Dr Chuck Sanders,  Army M&S Office  (CC Chair)
Michael O'Connor, Trideum Corporation (Feb 2025+)
Vacant (2025+)

(+ indicates that the member is eligible to run for an additional term.)

EXCOM Liaisons (Non-Voting)
Wim Huiskamp, NATO Modelling & Simulation Group