Who is Jared Isaacman, billionaire behind 1st private spacewalk?

American billionaire Jared Isaacman on Thursday created history by leading the first private spacewalk under SpaceX's Polaris Dawn mission. Isaacman is the CEO of Shift4, a payment processing firm he started aged 16 from his parents' basement. He is also the founder of Draken International, which owns the world's largest private fleet of military aircraft, as per Forbes.