Joe Acaba and Sunita Williams

ISS032-E-016863 (7 Aug. 2012) --- NASA astronaut Joe Acaba, Expedition 32 flight engineer, works on the Multi-User Droplet Combustion Apparatus (MDCA) Chamber Insert Assembly (CIA) in the Harmony node of the International Space Station. NASA astronaut Sunita Williams, flight engineer, works with an Extravehicular Mobility Unit (EMU) spacesuit in the background.