Lt. Col. Peter A. Garretson, USAF (Ret.) is a Senior Fellow in Defense Studies at AFPC and a co-director of the SPI. He is a prolific writer and is co-author with Richard Harrison of Space Shock: 18 Threats That Will Define Space Power (Armin Lear Press, 2025), The Next Space Race: A Blueprint for American Primacy (Praeger, 2023) and Scramble for the Skies: The Great Power Competition to Control the Resources of Outer Space (Lexington Books, 2020). Previously, Garretson spent over a decade as a transformational strategist for the Department of the Air Force, where he served as a strategy and policy advisor for the Chief of Staff of the Air Force, as Division Chief of Irregular Warfare Strategy Plans and Policy, and as the Chief of the Future Technology Branch of Air Force Strategic Planning. Garretson has extensive wargaming expertise, having helped design, been a player in, and led both red and blue teams in Net Assessment Wargames. Garretson has designed, planned, and executed a diversity of sim­ulations and wargames, including three Title X wargames for HQ U.S. Air Force, the first interagency planetary defense simulation, the U.S.-U.K.-France trilateral strategic initiative airpower war­game, the Air Command and Staff College Joint Warfare wargame, and two Space Horizons Task Force wargames (including one with NASIC). Garretson has designed multiple scenarios supporting U.S. Space Force Space Futures Workshop, Keplerian Chess, the Nonproliferation Policy Education Center (NPEC), and the AFPC National Space Council Simulation.