At NASA's Kennedy Space Center in Florida workers accompany space shuttle Endeavour to the Vehicle Assembly Building.

At NASA’s Kennedy Space Center in Florida, workers accompany space shuttle Endeavour as it is backed out of Orbiter Processing Facility-2 for its move, "or rollover," to the Vehicle Assembly Building.

Endeavour and its STS-134 crew will deliver the Express Logistics Carrier-3, Alpha Magnetic Spectrometer, spare parts, a high-pressure gas tank, additional spare parts for Dextre and micrometeoroid debris shields to the International Space Station. Launch is targeted for April 19 at 7:48 p.m. EDT. For more information visit, http://www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts134/index.html. Photo credit: NASA/Jack Pfaller