 On Flight Day 4, NASA astronaut's Mike Fossum and Ronald Garan performed a spacewalk to prepare the ISS and the JEM-PM for installation, during this Hoshide and fellow STS-124 Mission Specialist Greg Chamitoff robotically removed the module from Discovery's payload bay and moved it to its new home on the port the side of Node 2.The next day the STS-124 and Expedition 17 crews opened "Kibo" for the first time and egressed the module for the first time in space.Hoshide and the STS-124 crew remained on the ISS until 11 June 2008, when Discovery undocked from the Space Station and began its return to Earth, leaving Greg Chamintoff on board as a Flight Engineer on the Expedition 17 crew, and returning Expedition 17 Flight Engineer Garrett Reisman.