Mike Leinbach, Mike Moses, Bob Cabana, Bill Gerstenmaier

Mike Leinbach, space shuttle director, right, speaks during the post landing news conference at Kennedy Space Center at Cape Canaveral, Fla. Thursday, July 21, 2011. The landing of space shuttle Atlantis marks the end of NASA’s 30 year space shuttle program. Next to Leinbach is Mike Moses, space shuttle launch integration manager, Bob Cabana, Kennedy Space Center director and Bill Gerstenmaier, associate administrator for space operations. (AP Photo/J.Pat Carter)