Employees hold up a banner to commemorate space shuttle Endeavour's STS-134 mission as it is transported to the Vehicle Assembly Building.

At NASA's Kennedy Space Center in Florida, employees hold up a banner to commemorate space shuttle Endeavour's STS-134 mission as it is transported from Orbiter Processing Facility-2 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