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.^[1] For International Space Station assembly tasks, NASA conducted CEIT activities in the Space Station Processing Facility at Kennedy Space Center (KSC).^[2] 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.