Science & Exploration STS-121 crew in practice countdown - more pictures 16/06/2006 1380 views 0 likes ESA / Science & Exploration / Human and Robotic Exploration / Astrolab STS-121 mission crew donned orange pressure suits ready for the practice countdown at Launch Pad 39B STS-121 crewmembers Thomas Reiter and Stephanie Wilson on their way to the practice countdown at Kennedy Space Center Thomas Reiter driving M-113 armoured personel carrier at KSC Space Shuttle Discovery stands ready on Launch Pad 39B at NASA's Kennedy Space Center, in Florida Space Shuttle Discovery stands ready on Launch Pad 39B at NASA's Kennedy Space Center, in Florida Like Thank you for liking You have already liked this page, you can only like it once!