The mission represents the fifth pair of Boeing-built O3b mPOWER satellites to launch into medium Earth orbit. The Falcon 9 rocket lifted off from pad 40 at Cape Canaveral Space Force Station on Tuesday, July 22, at 5:12 p.m. EDT (2112 UTC).

A team of United Launch Alliance and NASA engineers worked through Delta 2 launch day fueling procedures during a simulated countdown Wednesday for what should be the second-to-last time before the venerable rocket’s final liftoff next month from California’s Central Coast.

Powering off the planet just after sunset Friday, a SpaceX Falcon 9 rocket took off from Cape Canaveral with the multi-mission SES 9 communications satellite to link millions of homes, businesses, ships and airplanes across the Asia-Pacific.