NASA astronauts Nick Hague and Christina Koch practice an emergency simulation inside the International Space Station's Zvezda service module.
iss059e103111 (June 13, 2019) — NASA astronauts Nick Hague and Christina Koch practice an emergency simulation inside the International Space Station’s Zvezda service module. The duo along with cosmonaut Alexey Ovchinin (out of frame) practiced emergency procedures for quickly entering their Soyuz lifeboat, undocking from the station and descending to Earth. Credit: Roscosmos