Roberto Vittori duringthe simulated launch countdown exercise

The STS-134 crew stride out of the Operations and Support Building on their way to Launch Pad 39A for a simulated launch countdown exercise on 1 April 2011.

Shuttle Endeavour is due to launch on 29 April.

The crew members for space shuttle Endeavour's STS-134 mission are Commander Mark Kelly, Pilot Gregory H. Johnson and Mission Specialists Michael Fincke, Greg Chamitoff, Andrew Feustel and European Space Agency astronaut Roberto Vittori.

During the 14-day mission, Endeavour will deliver the Alpha Magnetic Spectrometer (AMS) and spare parts including two S-band communications antennas, a high-pressure gas tank, additional spare parts for Dextre and micrometeoroid debris shields.