NASA tells astronauts aboard the International Space Station (ISS) to shelter and prepare for a possible evacuation as an air leak in the station’s Russian segment worsens. Multiple outlets report that NASA is coordinating with Roscosmos, the Russian space agency, which is working to repair the leak. NASA states the leak is located in the transfer tunnel of the Zvezda Service Module, a module that includes key support systems such as life support, communications, power distribution, data processing, and flight control equipment. NASA orders astronauts to enter emergency procedures as a precaution, with some reports describing four or five crew members taking protective action depending on the reporting outlet. According to these accounts, the crew moves into their docked spacecraft—reported as Crew Dragon for at least some astronauts—and dons spacesuits while awaiting further updates from the repair work. Al Jazeera and others describe the sheltering as being done “out of abundance of caution.” The situation remains focused on the ongoing technical repair effort by Roscosmos, with NASA monitoring the leak’s progression and the crew’s readiness in case evacuation becomes necessary.