ISS Crew Members Prepare for Final Spacewalk

The International Space Station crew has unpacked the Progress cargo spacecraft, and they are preparing to replace a faulty component in the Quest Airlock with a new unit delivered on the supply craft.
The replacement of the heat exchanger is scheduled for next week. The job will set the stage to restore use of the airlock as a base for spacewalks using U.S. spacesuits. The heat exchanger provides cooling for the suits, while they are connected to the airlock.