KENNEDY SPACE CENTER, FLA. - In the Orbiter Processing Facility at NASA’s Kennedy Space Center, astronauts of the second Return to Flight mission, STS-121, unload the Tile Repair Kit for a closer look at hardware they will be working with on the mission. Crew members seen in this photo are, left to right, Mission Specialists Lisa Nowak, Piers J. Sellers and Michael E. Fossum. The crew is at KSC to participate in the Crew Equipment Interface Test (CEIT). During CEIT, the crew has an opportunity to get a hands-on look at the orbiter and equipment they will be working with on their missions. Mission STS-121 is scheduled to launch aboard Atlantis in July.