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From left: Patrick Edwards and Mike Greene, flight surgeons with the Canadian Space Agency (CSA), and CSA astronaut Joshua Kutryk stand in front of the 711th Human Performance Wing’s centrifuge at Wright-Patterson Air Force Base, Ohio, June 20, 2025. Kutryk was one of five astronauts from NASA, CSA and the European Space Agency who completed centrifuge training, which simulates gravitational forces, or g-forces, experienced during launch and return to Earth. (U.S. Air Force photo / Keith Lewis)