alb (03/10/83)
A mock countdown and liftoff was successfully completed today, and technicians were preparing for the real thing as well. The Number 2 engine was bolted into place yesterday and final electrical hookups were installed today. The Numbers 1 and 3 engines will be installed tomorrow, and NASA hopes to complete the operation by the end of the week. When finished, they will seal off the engine compartment and pump helium through the engines to check for leaks.