Photos: Delta 4 awaits blastoff

Video highlights of the 50th Atlas 5 flight. The United Launch Alliance rocket carried the eighth Global Positioning System (GPS 2F-8) satellite for the U.S. Air Force.

A countdown dress rehearsal and rocket fueling exercise was completed at Cape Canaveral for next month’s launch of NASA’s Orion crew module atop a United Launch Alliance Delta 4-Heavy booster.

The United Launch Alliance Delta 4 rocket roars off the pad with the Global Positioning System 2F-9 satellite. Photos by ULA.