(04/29/1997) --- STS-84 crew members ride in and learn how to operate an M-113 armored personnel carrier as part of the Terminal Countdown Demonstration Test (TCDT) activities. Seated inside the M-113, from left, are Mission Specialist Jean-Francois Clervoy, Pilot Eileen Marie Collins (waving) and Commander Charles J. Precourt, in front. George Hoggard, a training officer with KSC Fire Services, sits on top of the personnel carrier. STS-84 aboard the Space Shuttle Atlantis will be the sixth docking of the Space Shuttle with the Russian Space Station Mir. After docking, STS-84 Mission Specialist C. Michael 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