(04/29/1997) --- STS-84 Mission Specialist C. Michael Foale rides in an M-113 armored personnel carrier as part of the Terminal Countdown Demonstration Test (TCDT) activities. STS-84 aboard the Space Shuttle Atlantis will be the sixth docking of the Space Shuttle with the Russian Space Station Mir. After docking, Foale will transfer to the space station and become a member of the Mir 23 crew, replacing U.S. astronaut Jerry M. Linenger, who will return to Earth aboard Atlantis. Foale will live and work on Mir until mid-September when his replacement is expected to arrive on the STS-86 mission. STS-84 is targeted for a May 15 liftoff