Brent Ochs, left, Air Force Research Laboratory technician, assists NASA astronaut Victor Glover, right, as he leaves the 711th Human Performance Wing’s centrifuge at Wright-Patterson Air Force Base, Ohio, Feb. 25, 2019. Glover, one of the Artemis II astronauts, completed centrifuge training, which simulates gravitational forces, or g-forces, experienced during launch and return to Earth. (U.S. Air Force photo / Richard Eldridge)