At NASA's Kennedy Space Center in Florida, STS-127 crew members stop in front of the Astrovan to acknowledge the spectators who have gathered to see them leave for Launch Pad 39A for a simulated launch countdown.
From left are Mission Specialists Dave Wolf, Tim Kopra, Tom Marshburn, Christopher Cassidy and Julie Payette, Pilot Doug Hurley and Commander Mark Polansky.
The launch dress rehearsal is the final activity in their three-day prelaunch training at Kennedy.
Image credit: NASA/Kim Shiflett
June 4, 2009