So... They decided they didn't want to risk killing the two astronaut's and maybe destroying the ISS. Archive: https://archive.today/2BgZU From the post: >>A last-minute problem nixed Saturday’s launch attempt for Boeing’s first astronaut flight, the latest in a string of delays over the years. Two NASA astronauts were strapped in the company’s Starliner capsule when the countdown automatically was halted at 3 minutes and 50 seconds by the computer system that controls the final minutes before liftoff.