(04/17/1998) --- Greeted by cheers from wellwishers at KSC and eager for their venture into space on the Neurolab mission, the STS-90 astronauts depart the Operations and Checkout Building on their way to Launch Pad 39B. Leading the seven-member crew is Mission Commander Richard Searfoss (far right), with Pilot Scott Altman by his side. Behind Altman are Mission Specialist Dafydd (Dave) Williams, M.D., (waving) with the Canadian Space Agency, and Mission Specialist Kathryn (Kay) Hire. Behind Hire is Mission Specialist Richard Linnehan, D.V.M., and next to Linnehan is Payload Specialist Jay Buckey, M.D. At the rear behind Linnehan is Payload Specialist James Pawelczyk, Ph.D. Their trip to the pad will take about 25 minutes aboard the Astrovan. Once there, they will take their positions in the crew cabin of the Space Shuttle Columbia to await a liftoff during a two-and-a-half hour window that will open at 2:19 p.m. EDT