In the Space Station Processing Facility at NASA's Kennedy Space Center in Florida, members of space shuttle Endeavour's STS-126 crew participate in a crew equipment interface test. From left, Mission Specialists Sandra Magnus and Donald Pettit, and Commander Chris Ferguson are dressed in clean room attire for a walkthrough of the multi-purpose logistics module. The equipment interface test provides the astronauts hands-on experience with hardware and equipment slated to fly on their mission. Photo credit: NASA/Kim Shiflett July 31, 2008