Richard Branson and Elon Musk aren't the only personalities in the commercialised spaceflight game. There a plenty of smaller operations having a crack, from hobbyist operations such as John Carmack's Armadillo Aerospace, to more serious efforts. In this video from Freethink -- which will be an ongoing series -- we get a chance to meet one of these dedicated outfits, with the focus here being Jeff Greason and XCOR Aerospace.