The crew receives instruction on the operation of an M-113 during Terminal Countdown Demonstration Test TCDT activities.

The STS-88 crew receives instruction on the operation of an M-113, an armored personnel carrier, as part of emergency egress training from George Hoggard (back to camera) during Terminal Countdown Demonstration Test (TCDT) activities. From left to right, they are Mission Specialist Jerry L. Ross; Mission Commander Robert D. Cabana; Mission Specialist Sergei Konstantinovich Krikalev, a Russian cosmonaut; Mission Specialist Nancy J. Currie; Mission Specialist James H. Newman; and Pilot Frederick W. "Rick" Sturckow. The TCDT also provides the crew with simulated countdown exercises and opportunities to inspect their mission payloads in the orbiter's payload bay. Mission STS-88 is targeted for launch on Dec. 3, 1998. It is the first U.S. flight for the assembly of the International Space Station and will carry the Unity connecting module