The document summarizes the pre-launch processing steps for the space shuttle Discovery. The external tank arrives by barge and is lifted vertically in the VAB. The solid rocket boosters and engines are attached to the external tank. Meanwhile, the shuttle is attached to the external tank in the VAB. The payload is prepared in the PPR and then lifted into position in the shuttle. Finally, the fully assembled shuttle and external tank are moved to the launch pad on a crawler where it is ready for launch.