An Atlas 5 rocket successfully launched another Cygnus cargo freighter for Orbital ATK Tuesday night, fulfilling the booster’s role of reestablishing America’s resupply link to the International Space Station.

The chief executive of Axiom Space says agreements with NASA, SpaceX, and fare-paying passengers should be finalized in the coming weeks for the launch of the first all-private crew to the International Space Station in October 2021, and former NASA astronaut Michael Lopez-Alegria is set to command the mission.

SpaceX called off the planned launch of a Falcon 9 rocket Saturday less than 15 seconds before liftoff to investigate the “slightly odd” behavior of the vehicle’s upper stage engine steering system, company chief Elon Musk said.