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KENNEDY SPACE CENTER, Fla. -- After a 24-hour delay of the STS-105 launch, Expedition Three Commander Frank Culbertson steps off the Astrovan that has returned the crews to the Operations and Checkout Building. Launch countdown activities for the 12-day mission were called off at about 5:15 p.m. The launch window extends for Aug. 9 during the T-9 minute hold due to the high potential for lightning, a thick cloud cover and the potential for showers. These were clear violations of launch weather criteria. The next launch attempt will be on Friday, Aug. 10, at the preferred launch time of about 5:15 p.m. The launch window extends for about 5 minutes. On the mission, Space Shuttle Discovery will be transporting the Expedition Three crew and several scientific experiments and payloads to the International Space Station, including the Early Ammonia Servicer (EAS) tank. The EAS, which will support the thermal control subsystems until a permanent system is activated, will be attached to the Station during two spacewalks. The three-member Expedition Two crew will be returning to Earth aboard Discovery after a five-month stay on the Station