Orion, Delta IV Heavy at SLC-37

At Space Launch Complex 37 at Cape Canaveral Air Force Station in Florida, the Delta IV Heavy rocket is ready to launch NASA's Orion spacecraft on Exploration Flight Test-1 on Dec. 4, 2014. Photo credit: NASA

At Space Launch Complex 37 at Cape Canaveral Air Force Station in Florida, the Delta IV Heavy rocket is ready to launch NASA's Orion spacecraft on Exploration Flight Test-1 on Dec. 4, 2014. Part of Batch image transfer from Flickr.