The seven crew mates arrived a day later than planned because of Tropical Storm Alberto, which made landfall Tuesday well northwest of Cape Canaveral. They flew in a Gulfstream aircraft instead of the usual training jets because of the stormy weather.
"It's great to be here, finally, a day late," said Steve Lindsey, the crew's commander. "My crew and I are optimistic that early July looks good."
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The crew members rearranged their schedule and planned to stay an extra day, until Friday, because of the weather delay.
The dress rehearsals include a practice launch countdown, an exercise in which they escape from the launch pad, and instruction on using fire suppression and other emergency equipment.
NASA's top managers planned to meet at the Kennedy Space Center on Friday and Saturday to pick a launch date and decide whether to give the launch a final green light.