STS-123 crew members inspect the thermal protection system tiles on the underside of space shuttle Endeavour.

In the Orbiter Processing Facility, STS-123 crew members inspect the thermal protection system tiles on the underside of space shuttle Endeavour. From left are Mission Specialists Takao Doi, Michael Foreman and Richard Linnehan, Pilot Gregory Johnson (turned away), Commander Dominic Gorie and Mission Specialist Robert Behnken. They are at NASA's Kennedy Space Center for a crew equipment interface test, a process of familiarization with payloads, hardware and the space shuttle. The STS-123 mission is targeted for launch on space shuttle Endeavour on Feb. 14. It will be the 25th assembly flight of the station. Photo credit: NASA/Kim Shiflett