STS-73 Mission Commander Kenneth D. Bowersox arrives at KSC's Shuttle Landing Facility (SLF), ready to fly one spaceship into orbit as another vehicle is prepared for a different destination behind him. Bowersox and his six-member crew flew into KSC just hours after the countdown clock began ticking toward a scheduled liftoff of the Space Shuttle Columbia from Pad 39B at 9:35 a.m EDT, Sept. 28. The orbiter Discovery was towed to the SLF for a cross-country trip to the West Coast and a regularly scheduled refurbishment and checkout period.