Virgin Galactic might hit another milestone today in its quest to provide trips to suborbital space. If the weather cooperates and everything goes as planned for the company, its first private passenger flight will be taking off from its Spaceport America facility at 11AM EDT. Virgin Galactic's inaugural commercial flight took place in late June, but that one carried Italian government workers, including two Air Force personnel, to space. This time, its three passengers are civilians, and one of them is even the company's first paying customer.