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CAPE CANAVERAL, Fla. -- On Launch Pad 39A at NASA's Kennedy Space Center, the STS-124 crew poses for a photo before taking part in a media question-and-answer session that will be conducted on the slidewire landing area. From left are Mission Specialists Greg Chamitoff and Mike Fossum, Pilot Ken Ham, Commander Mark Kelly, and Mission Specialists Karen Nyberg, Ron Garan and Akihiko Hoshide, who represents the Japan Aerospace Exploration Agency. The crew is at Kennedy for a dress launch rehearsal called the terminal countdown demonstration test. TCDT provides astronauts and ground crews with an opportunity to participate in various simulated countdown activities, including equipment familiarization and emergency training. On the STS-124 mission, the crew will deliver and install the Japanese Experiment Module – Pressurized Module and Japanese Remote Manipulator System. Discovery's launch is targeted for May 31. Photo credit: NASA/Kim Shiflett