The International Space Station's Canadarm2 and Dextre, also known as the Special Purpose Dextrous Manipulator (SPDM), carry the Rapidscat instrument assembly after removing it from the trunk of the SpaceX Dragon cargo ship (upper right), which is currently docked to the nadir port of the Harmony node. The Rapidscat was then maneuvered for attachment to the nadir adapter that is affixed to the station's Columbus laboratory. September 30, 2014.