Kathy Lueders, associate administrator, Space Operations Mission Directorate, NASA Headquarters, signs a document during the Flight Readiness Review for the agency’s SpaceX Crew-4 mission at the agency’s Kennedy Space Center in Florida on April 15, 2022. International partners also participated. NASA and SpaceX mission managers held the review to confirm the SpaceX Falcon 9 rocket and Crew Dragon spacecraft are ready for launch. Crew-4 is scheduled to launch to the International Space Station from Kennedy’s Launch Complex 39A on April 23, 2022, as part of NASA’s Commercial Crew Program. Liftoff of the Falcon 9 rocket and Crew Dragon spacecraft is targeted for 5:26 a.m. EDT.