STS-104, Mission Control Center Status Report # 16 Thursday July 19, 2001 – 6 p.m. CDT

The eight Atlantis and International Space Station crewmembers will start their day with a dry run of a
spacewalk from the station’s new Quest airlock, completing their testing and activation of the airlock. Atlantis
spacewalkers Mike Gernhardt and Jim Reilly, assisted by Pilot Charlie Hobaugh and Expedition Two Flight
Engineer Jim Voss, will simulate spacewalk preparations beginning around 7 p.m.

Atlantis Commander Steve Lindsey and Mission Specialist Janet Kavandi will assist with the final checks of
the airlock later in the morning. Subsequently, all eight crewmembers will gather to review the procedures for
Friday’s spacewalk, the third of the mission. During that spacewalk, Gernhardt and Reilly will attach the final
nitrogen gas tank to the airlock, assisted by Voss and Expedition Two Flight Engineer Susan Helms who will
be operating the station’s robotic arm. At 10:11 p.m., the two crews will participate in a joint news
conference with media representatives at several NASA centers and the Russian Mission Control Center in
Korolev. That conference will run for 26 minutes and will be shown live on NASA TV. In addition, Lindsey is
scheduled to downlink a tour of the Quest airlock around 3 a.m.

Station Commander Yury Usachev will perform various periodic maintenance duties on the station’s Russian
systems, as well as help fellow crewmates Voss and Helms prepare for robotics operations related to Friday
evening’s spacewalk.

The Atlantis crew was awakened at 4:04 p.m. by the song “A Time To Dance” by Janet Giroux played by
the Space Center Intermediate School Symphonic Band. The band was directed by Giroux and the song
was played for Reilly.

The next mission status report will be issued about 6 a.m. Friday or as events warrant.