but the shuttle program because that is the history-making event of the day, we hope. ali velshi at kennedy space center where they re fueled up, ready to go, but we ll see if it happens. they are ready to go. we know there s going to be a lot of news one way or the other. we are live at kennedy space center here in florida. the counting down, the hours. you can see it there the countdown clock hasn t started going. this is the countdown to the last launch ever of the space shuttle atlantis, last launch ever of a space shuttle. it is truly the end of an amazing era. four astronauts will make history today. 1 million people from around the world are expected to gather in the greater area here to witness it. if the weather holds out. they re ready to go in case the shuttle takes off. of the people on the shuttle only 355 of the very elite have flown the shuttle in its 30-year history. we ll be bringing you every step of the final four astronauts, the steps that they take th