Snapshots from Atlas 5 launch

The main engine rumbling to life. Ice shards breaking free. The rocket lumbering off the pad. The battle against gravity being won once again. That was the scene as the Atlas 5 took flight to cap a generation of Global Positioning System satellites.

Ground crews finished the initial build-up of the last “single stick” medium-lift variant of United Launch Alliance’s Delta 4 rocket on its launch pad at Cape Canaveral last week in preparation for liftoff with a GPS navigation satellite July 25.

This media briefing comes as NASA is potentially within a week of making its final decision on how to bring the Starliner CFT crew home. The agency is debating on if Starliner is determined to be safe or if NASA astronauts Barry “Butch” Wilmroe and Sunita “Sunni” Williams will return on a SpaceX Crew Dragon spacecraft.