news hello everyone. thanks for joining me. i m alison camera was triggered with less than four minutes until launch. the computer that launches the rocket stop the countdown clock now officials are racing to learn why both astronauts are now back at crew quarters after leaving the capsule, a short time ago joining us now from the kennedy space center is cnn space and defense correspondent kristin fisher so kristinn obviously this is not the news that nasa or boeing wanted today. what happened? we just don t know yet and we re going to find out hopefully quite a bit more during a press conference that nasa, boeing, and the united launch alliance have called, which is set to start in exactly one hour. now, all we know right now is that there was an issue with the ground launch sequencer and that is the computer that s responsible for launching this rocket. it s essentially an automated process. once you get down that close to lift off and there was some kind of problem wit