Although the launch was a success, much remains to be accomplished. SpaceX Dragon spacecraft have delivered cargo to the ISS many times, but this is the first Dragon to dock rather than berth with ISS. In berthing, the spacecraft maneuvers close to the ISS and stops. It then is captured by astronauts using the robotic Canadarm2 after which ground controllers install it onto a docking port. Crew Dragon must dock using its own propulsion and navigation systems. Reentry also will be different since the exterior of Crew Dragon has additional thrusters, for example, which make it asymmetrical.