ISS015-E-25439 (30 Aug. 2007) --- Cosmonauts Fyodor N. Yurchikhin (left) and Oleg V. Kotov, Expedition 15 commander and flight engineer, respectively, both representing Russia's Federal Space Agency; along with astronaut Clay Anderson, flight engineer, give a "thumbs-up" signal at the conclusion of Pressurized Mating Adapter-3 (PMA-3) transfer operations in the Destiny laboratory of the International Space Station. Using the station's robotic arm, Canadarm2, the PMA-3 was undocked from the Unity node's left side at 7:18 a.m. (CDT) and docked to Unity's lower port at 8:07 a.m. to prepare for the arrival of Node 2, the Harmony module, on the STS-120 flight of Space Shuttle Discovery in October 2007.