NASA astronauts Butch Wilmore and Suni Williams flew to the ISS in the summer of 2024 for a routine eight-day test mission. However, due to problems with the propulsion system of Boeing’s Starliner capsule,

A spokesperson with NASA, which oversees SpaceX’s flights to the ISS, said “NASA and SpaceX are expeditiously working to safely return the agency’s SpaceX Crew-9 astronauts Suni Williams and Butch Wilmore as soon as practical, while also preparing for the launch of Crew-10 to complete a handover between expeditions.”