STS-133 crew walkout from O&C

STS133-S-006 (24 Feb. 2011) --- After suiting up, the STS-133 crew members exit the Operations and Checkout Building to board the Astrovan, which will take them to launch pad 39A for the launch of space shuttle Discovery on the STS-133 mission. From the right are NASA astronauts Steve Lindsey, commander; Eric Boe, pilot; Steve Bowen, Alvin Drew, Michael Barratt and Nicole Stott, all mission specialists. Discovery and its six-member crew will deliver the Permanent Multipurpose Module, packed with supplies and critical spare parts, as well as Robonaut 2, the dexterous humanoid astronaut helper, to the International Space Station. Discovery, which will fly its 39th mission, is scheduled to be retired following STS-133. This will be the 133rd Space Shuttle Program mission and the 35th shuttle voyage to the space station. Photo credit: NASA or National Aeronautics and Space Administration