JJ Joyner Jonathan Cruz and Stuart Cooke take part in a countdown simulation for the upcoming Ares I-X flight test.

In the Launch Vehicle Data Center- 1 in Cape Canaveral Air Force Station's Hangar AE, (from right) JJ Joyner, Jonathan Cruz and Stuart Cooke take part in a countdown simulation for the upcoming Ares I-X flight test. The LVDC was developed by NASA's Kennedy Space Center to support multiple test operations in parallel or a single large launch operation. The LVDC works in tandem with the adjacent Mission Director Center, the control room where NASA launch managers monitor expendable vehicle launches, and where the final decision to launch is made. Photo credit: NASA/Kim Shiflett