James (MARK) McCall is an elected member and Vice Chair/Acting Secretary of the Executive Committee of SISO, the Chair of the DIS/RPRFOM PSG, the Chair of the DIS PDG, and the Chair of the Compressed-DIS PDG. He has been active in SISO since 1999 and has served on the RD&E PRP, the SAC, and the EXCOM. He was also the Executive Director of SISO from 2012-2019. In 2000, Mr McCall retired from the United States Air Force after 33 years active duty as cryptographic technician, communications/computer officer, and program manager. In 2020, Mr McCall retired from Program Manager and Senior Analyst with the Air Force Research Laboratory, Warfighter Readiness Research Division at Wright Patterson AFB OH. He supported training research across several operational domains and emphasized the extension of distributed simulation technology to meet the expanding requirements of high fidelity training.