Stock Photo - 04/17/1998 ___ The STS_90 flight crew enjoy the traditional pre_liftoff breakfast in the crew quarters of the Operations and Checkout Building. They are, from left, Payload Specialist Jay Buckey, M.D., Mission Specialist Dafydd Dave Williams, M.D., with the Canadian Space Agency, Pilot Scott Altman, Commander Richard Searfoss, Mission Specialist Kathryn Kay Hire, Mission Specialist Richard Linnehan, D.V.M., and Payload Specialist James Pawelczyk, Ph.D. After a weather briefing, the flight crew will be fitted with their launch and entry suits and depart for Launch Pad 39B. Once there, they will take their positions in the crew cabin of the Space Shuttle Columbia to await liftoff during a two_and_a_half_hour window that will open at 2:19 p.m. EDT, Apr. 17. STS_90 is the launch of Neurolab, a nearly 17_day mission to examine the effects of spaceflight on the brain, spinal cord, peripheral nerves and sensory organs in the human body