I didn't want to pollute the official thread on the recent possible ammonia leak with this question. Please move if necessary. I hope everyone is safe up there. Recently, an alarm on ISS forced the crew to evacuate to the Russian Orbital Segment. When a Commercial Crew Vehicle is attached, would the crew enter that vehicle instead? If 1 Cosmonaut rides on the Commercial Crew Vehicle, might he be trapped in the ROS? I though Soyuz seats were conformed to each person.