CAPE CANAVERAL, Fla. – At NASA's Kennedy Space Center in Florida, news media and other guests gather in anticipation of the launch of NASA's Orion spacecraft atop a United Launch Alliance Delta IV Heavy rocket. For more information, visit www.nasa.gov/orion Photo credit: NASA/Frankie Martin

At NASA's Kennedy Space Center in Florida, news media and other guests gather in anticipation of the launch of NASA's Orion spacecraft atop a United Launch Alliance Delta IV Heavy rocket.