Billionaire Jared Isaacman and SpaceX crew trainer Sarah Gillis performed the first non-government spacewalk in history, floating outside the Polaris Dawn spacecraft. Isaacman and Gillis tested SpaceX-designed EVA suits, assessing comfort and mobility for future commercial astronauts. The spacewalk utilized a "Skywalker" scaffold and relied on umbilicals for air and communication. The mission, part of a five-day flight, aims to perfect low-cost spacesuits on the Moon or Mars.