Shuttle Endeavour fueled up for liftoff

The rotating service structure is rolled back from the shuttle Endeavour on Friday at Launch Pad 39A at NASA's Kennedy Space Center in Florida, in preparation for Saturday's scheduled launch. An oxygen vent hood known as the "beanie cap" is positioned on top of its fuel tank.CAPE CANAVERAL, Fla. - NASA fueled up the space shuttle Endeavour for its scheduled Saturday morning launch to the