new techniques for repairing damaged tiles on the shuttle's heat shield, while the second and third spacewalks were both dedicated to upgrading and maintaining the space station, replacing a Control Movement Gyro which had suffered a mechanical failure in 2002 and installing an External stowage platform which was brought up aboard STS-114. Over the course of the three EVAs Noguchi spent 20 hours and 5 minutes outside the station. Noguchi and his crew mates returned to Earth on 9 August 2005, carrying over 7,055 pounds of equipment and trash down from the station inside of a Multi-Purpose Logistics Module, which had been used to bring up supplies to the station two weeks earlier. Discoverys landing at the Kennedy Space Center wrapped up a 13-day, 21 hour, 32 minute and 48 second spaceflight. Expedition 22/23 Following STS-114, Noguchi was assigned as a backup ISS Flight Engineer for JAXA astronaut Koichi Wakata, who became the first Japanese astronaut to live long duration aboard the space station. Following his assignment as a backup for Wakata, JAXA assigned Noguchi to the crew of ISS Expedition 22/23 alongside Russian cosmonaut Oleg Kotov and NASA astronaut Timothy Creamer. Noguchi and his two crew mates launched on 21 December 2009 aboard Soyuz TMA-17, he became the first JAXA astronaut and second Japanese citizen (following Tokyo Broadcasting System reporter Toyohiro Akiyama) to fly on a Soyuz spacecraft, the trio spent two days in free flight, before docking to the ISS and joining the Expedition 22 crew, joining American Commander Jeff Williams and Russian flight engineer Maksim Surayev. During Expedition 22, the crew were visited by Space Shuttle Endeavour during its penultimate flight, STS-130, which delivered the Node 3 module and the Cupola to the station. During this flight Noguchi was also in space with his former STS-114 crewmate Stephen Robinson, who was mission specialist on STS-130. Soyuz TMA-16 returned to Earth on 18 March 2010, carrying Surayev and Williams and officially ending Expedition 22, following which Noguchi, Kotov, and Creamer transferred to Expedition 23, with Kotov taking command of the station. Shortly after they were joined by Soyuz TMA-18, carrying Russian cosmonauts Aleksandr Skvortsov and Mikhail Kornienko as well as American astronaut Tracy Caldwell Dyson. Expedition 23 was visited by two Space Shuttle missions, STS-131 and STS-132. STS-131 delivered new supplies to the ISS aboard Space Shuttle Discovery, the flight also carried JAXA mission specialist Naoko Yamazaki, who