NASA's Space Shuttle has launched more astronauts to outer space than all other space vehicles combined. But instead of being remembered as a workhorse for human spaceflight, the most retold stories of the Space Shuttle are stained with tragedy: two disasters that killed 14 astronauts during flight. On February 1, 2003, NASA Administrator Sean O'Keefe was on the runway waiting for the Columbia Space Shuttle to return home. Instead of greeting the world's newest space pioneers and welcoming them back to Earth, he was tasked with informing their families and friends of their terrible fate.