Steve Swanson works on the Carbon Dioxide Removal Assembly.
ISS039-E-011054 (10 April 2014) — NASA astronaut Steve Swanson, Expedition 39 flight engineer, may be smiling because he has the assistance of zero gravity to lift such a large apparatus on the International Space Station. For several days, the Expedition 39 crew members have been working on a Carbon Dioxide Removal Assembly (CDRA) Desiccant/Adsorbent Bed.