NASA's Space Shuttle "Atlantis" crew attends photo opportunity at the Kennedy Space Center.

The crew of NASA's Space Shuttle "Atlantis" mission, STS 135, Rex Walheim, Sandra Magnus, Craig Ferguson and Doug Hurley (l to r) attends an Employee Appreciatiion function to thank NASA employees and contractors for servicing the shuttle program over the past thirty years at the Kennedy Space Center on July 21, 2011. Atlantis and her crew flew back home to the Spaceport, ending the 30 year program. Atlantis completed the 135th mission with a pre-dawn landing on Runway 15 at 5:56 am. .UPI/Joe Marino - Bill Cantrell