The crew of STS-115, led by Chris Ferguson and Brent Jett (front l and r), followed by Steve MacLean, Dan Burbank (center l and r), Heide Piper and Joe Tanner (rear l and r) depart the Operations and Checkout Building for the launch pad at the Kennedy Space Center, Florida on September 9, 2006. Space Shuttle Atlantis is scheduled for launch at approximately 11:41 AM. (UPI Photo/Joe Marino-Bill Cantrell)