Crew equipment interface test

A crew equipment interface test (CEIT) was a training procedure that helped spaceflight crewmembers gain first-hand knowledge of the flight hardware used during a space shuttle mission. For International Space Station assembly tasks, NASA conducted CEIT activities in the Space Station Processing Facility at Kennedy Space Center (KSC). The last CEIT was conducted April 7-8, 2011 by the STS-135 crew involving the space shuttle Atlantis in preparation for the final flight of the shuttle program.