Video: Liftoff of Atlas 5 with X-37B on program’s fourth flight

With an international flair for collaboration, a military communications satellite jointly purchased by five allies was rocketed in space Saturday to further expand the U.S.-operated network that serves battlefield forces anywhere on Earth.

Sunday’s flight of the United Launch Alliance Atlas 5 rocket from Vandenberg Air Force Base in California was scrubbed due to a wildfire burning south of the pad. The launch delay allows crews to remain in place to battle the blaze. The lack of Range availability this week means the next launch try won’t come until Sept. 26.

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.