Rick Mastracchio performs maintenance on a Carbon Dioxide Removal Assembly.
ISS039-E-010325 (9 April 2014) — NASA astronaut Rick Mastracchio, Expedition 38/39 flight engineer, is seen in the Harmony node on the Earth-orbiting International Space Station performing maintenance on a Carbon Dioxide Removal Assembly (CDRA) Desiccant/Adsorbent Bed on April 9, 2014.