Sigma Beta brother Scott Poteet made history as part of the Polaris Dawn team.

From NBC news:
The crew spent two-and-a-half years training for the Polaris Dawn mission, which included choreographing and rehearsing each step of the spacewalk.

The flight was designed to be a stepping stone toward future long-duration trips to the moon and eventually Mars, according to Isaacman, who funded the mission for an undisclosed sum in partnership with SpaceX. (The crew members also raised money for St. Jude Children’s Research Hospital during their time in orbit.)

More info:
https://www.youtube.com/watch?v=Ndc5b0GYFOk
https://www.nbcnews.com/science/space/polaris-dawn-crew-interview-spacewalk-rcna171383
https://polarisprogram.com/team/scott-poteet/
https://magazine.unh.edu/issue/winter-2023/to-the-stars/
https://mynews13.com/fl/orlando/space/2024/08/16/scott-kidd-poteet-talks-about-polaris-dawn