Video: Zoomed in view of ignition of Falcon 9 engines in prelaunch test (members only)

A month after an X-37B mini-space shuttle glided to a landing on Kennedy Space Center’s runway in Florida, the U.S. Air Force announced Tuesday that the spaceplane’s next mission will launch in August aboard a SpaceX Falcon 9 rocket for the first time.

The Soyuz booster that will send the International Space Station’s next three residents into orbit later this week rolled out of an integration hangar early Monday and rode a railroad car to its launch pad at the Baikonur Cosmodrome in Kazakhstan.

SpaceX’s next Falcon 9 rocket arrived at Kennedy Space Center’s pad 39A on Thursday for a hold-down engine firing ahead of launch next week with the U.S. Air Force’s X-37B spaceplane. The brief engine ignition occurred at 4:30 p.m. EDT (2030 GMT).