SpaceX’s first Falcon Heavy rocket took off on its inaugural test launch from NASA’s Kennedy Space Center in Florida at 3:45 p.m. EST (2045 GMT). The high-power launcher successfully boosted Elon Musk’s electric Tesla sports car into deep space as a shakedown for future Falcon Heavy missions.

United Launch Alliance teams rolled the Mobile Service Tower away from a Delta 4-Heavy rocket at Cape Canaveral’s Complex 37B launch pad Wednesday in preparation for liftoff on a national security mission.

The sixth and final satellite in the U.S. military’s most secure satellite communications fleet lifted off from Cape Canaveral Thursday aboard a United Launch Alliance Atlas 5 rocket, extending the network’s expected lifetime beyond 2030.