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NASDA Astronaut Takao Doi performed Japan's first EVA on STS-87

STS-123 was a Space Shuttle mission to the International Space Station (ISS) which was flown by Space Shuttle Endeavour. STS-123 was the 1J/A ISS assembly mission. The original launch target date was 14 February 2008 but after the delay of STS-122, the shuttle was launched on 11 March 2008. It was the twenty-fifth shuttle mission to visit the ISS, and delivered the first module of the Japanese laboratory, Japanese Experiment Module (Kibō), and the Canadian Special Purpose Dexterous Manipulator, (SPDM) Dextre robotics system to the station. The mission duration was 16 days and 14 hours, and it was the first mission to fully utilize the Station-to-Shuttle Power Transfer System (SSPTS), allowing space station power to augment the shuttle power systems. The mission set a record for a shuttle's longest stay at the ISS.

The crew patch depicts the space shuttle in orbit with the crew names trailing behind. STS-123's major additions to ISS (the ELM-PS installation with the shuttle robotic arm and the fully constructed SPDM) are both illustrated. The ISS is shown in the configuration that the STS-123 crew will encounter when they arrive.

STS-87 was a Space Shuttle mission launched from Launch Complex 39B of the Kennedy Space Center on 19 November 1997. It was the 88th flight of the Space Shuttle, and the 24th flight of Columbia. The mission goals were to conduct experiments using the United States Microgravity Payload (USMP-4), conduct two EVAs, and to deploy the SPARTAN-201 experiment. This mission marked the first time an EVA was performed from Columbia. An EVA from Columbia was originally planned for STS-5 in 1982, but was cancelled due to spacesuit problems. It also marked the first EVA conducted by a Japanese astronaut, Takao Doi.

STS-87 was a Space Shuttle mission launched from Launch Complex 39B of the Kennedy Space Center on 19 November 1997. It was the 88th flight of the Space Shuttle, and the 24th flight of Columbia. The mission goals were to conduct experiments using the United States Microgravity Payload (USMP-4), conduct two EVAs, and to deploy the SPARTAN-201 experiment. This mission marked the first time an EVA was performed from Columbia. An EVA from Columbia was originally planned for STS-5 in 1982, but was cancelled due to spacesuit problems. It also marked the first EVA conducted by a Japanese astronaut, Takao Doi.

NASDA Astronaut Takao Doi performed Japan's first EVA on STS-87

The Extravehicular Activity Development Flight Test - 05 consists of the payload bay hardware elements of Detailed Test Objective (DTO) 671, EVA Hardware for Future Scheduled Extravehicular Missions.  EDFT - 05's main objective is to demonstrate International Space Station (ISS) on-orbit, end-to-end EVA assembly and maintenance operations.  The other DTO's included in this test are DTO 672, Extravehicular Mobility Unit (EMU) Electrical Cuff Checklist and DTO 833, EMU Thermal Comfort and EVA Worksite Thermal Environment.  Another objective is to expand the EVA experience base for ground and flight crews.  Two EVA's will be performed on this mission to accomplish these DTO's.
The portside-mounted EDFT-05 hardware is in bay 7 and consists of the Orbital Replacement Unit (ORU) Transfer Device (OTD), a Pitch/Yaw Worksite Interface (WIF) Fitting, and Flight Support Equipment (FSE) to the sidewall carrier.
The starboard-mounted EDFT-05 hardware consists of bay 2 Portable Work Platform (PWP) components including the Articulating Portable Foot Restraint (APFR), Temporary Equipment Restraint Aid (TERA), and Work Station Stanchion (WSS).  Bay 7 contains the ORU Simulator and Carrier Assembly (OSCA) consisting of a Battery ORU Simulator attached to the Cargo Handling Interface Assembly (CHIA), and the Dry Carrier (DCC) Simulator.  Bay 8 houses an adapter plate with WIF's and a mounting location for the cable caddy. 
During launch and landing EVA equipment stowage requires orbiter middeck locker space and the starboard Portable Stowage Assembly (PSA).
Prior to scheduled EDFT - 05 activities, orbiter cabin pressure will be lowered to 10.2 psi and the standard EVA prebreathe protocols started.  EDFT - 05 activities require two crew members  to perform two full-duration EVA's and one crew member to provide Intravehicular Activity (IVA) support.