NASA is getting ready for the SpaceX Crew-4 mission to the International Space Station. The mission will be NASA’s latest crew rotation flight involving a U.S. commercial spacecraft carrying astronauts. NASA officials held a press conference Thursday, detailing their efforts and the importance of mission safety. “We are getting ready for our crew rotation missions. Once again launching our crews to the International Space Station and returning our crews. And then we have our Boeing uncrewed demonstration and then leading up to the Artemis 1 uncrewed demonstration,” said Kathy Lueders, NASA’s human spaceflight chief. The Crew-4 mission is carrying NASA astronauts Kjell Lindgren, Bob Hines, and Jessica Watkins, as well as European Space Agency astronaut Samantha Cristoforetti.