This helicopter view of the Kennedy Space Center Visitor Complex shows the thousands of vehicles parked where guests gather.

This helicopter view of the Kennedy Space Center Visitor Complex shows the thousands of vehicles parked where guests gather to see the launch of the Orion Flight Test. The liftoff was postponed because of an issue related to fill and drain valves on the Delta IV Heavy rocket that teams could not troubleshoot by the time the launch window expired. For more information, visit www.nasa.gov/orion Photo credit: NASA/Kim Shiflett