In emergencies, they have portable oxygen tanks and life-support systems. If these systems fail, immediate access to backup oxygen and a quick return to the spacecraft is crucial for survival.

ALPENA — The portable oxygen trailer located at MyMichigan Medical Center Alpena will continue to fill oxygen tanks for area emergency personnel and community members. National Guard volunteers ...

Space missions always carry backup oxygen tanks. If a system fails, astronauts can use emergency supplies. They also have portable oxygen cylinders for survival. These precautions help them stay ...