STS-94 Payload Specialist Roger K. Crouch is helped into his launch/entry suit by a suit technician in the Operations and Checkout (OC) building after the suit has been given a pressure test. He is the Chief Scientist of the NASA Microgravity Space and Applications Division. He also has served as a Program Scientist for previous missions and is an expert in semiconductor crystal growth. Crouch and six other crewmembers prepare to depart the OC and head for Launch Pad 39a, where the Space Shuttle Columbia will lift off.