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.

This is the launch highlights reel from United Launch Alliance of the Atlas 5 rocket carrying the fourth mission of the Air Force’s X-37B spaceplane.

The first Ariane 5 launch since a mission flew off course Jan. 25, deploying two communications satellites into an off-target orbit, is underway. Liftoff with the DSN 1/Superbird 8 and Hylas 4 communications satellites occurred on time at 2134 GMT (5:34 p.m. EDT).