June 8 : When SpaceX goes public on Friday with what is expected to be a record-setting IPO, it will cap two decades of founder and CEO Elon Musk's ambition to transform rocketry, satellite communications and humanity’s reach into space. Each step of the way, there has been a guiding hand largely out of view: the company's president, Gwynne Shotwell, who has spent 24 years focused on building and selling SpaceX through her engineering expertise and dealmaking instincts. Along the way,