United Launch Alliance’s rocket transport ship has delivered a Delta 4-Heavy rocket to Vandenberg Air Force Base in California in preparation for launch of a U.S. government spy satellite late this year.

The step-by-step stacking of United Launch Alliance’s final Delta 2 rocket was completed in June at Vandenberg Air Force Base in California for liftoff Sept. 15 with an Earth science satellite for NASA.

The launch an Ariane 5 rocket with Brazilian and Korean communications satellites that was set for this week has been postponed indefinitely after protesters blocked access to the French Guiana spaceport.