With Tropical Depression Eta forecast to restrengthen into a tropical storm and move toward Florida, United Launch Alliance moved an Atlas 5 rocket off its launch pad at Cape Canaveral Friday and delayed liftoff with a U.S. government spy satellite to Wednesday.

The next satellite to launch from Cape Canaveral — an essential communications satellite for the U.S. military and allied nations — was moved to the pad and mounted atop its Delta 4 rocket today.

With as few as 15 more launches on the calendar over the next five years, the rocket name “Delta” that has been serving the U.S. and international customers since 1960 could permanently fade into history.