Mission Specialist David Wolf adjusts his helmet during suit check part of Terminal Countdown Demonstration Test activities.

STS-112 Mission Specialist David Wolf adjusts his helmet during suit check, part of Terminal Countdown Demonstration Test activities. The TCDT also includes emergency egress training and a simulated launch countdown. The mission aboard Space Shuttle Atlantis is scheduled to launch no earlier than Oct. 2, between 2 and 6 p.m. EDT. STS-112 is the 15th assembly mission to the International Space Station. Atlantis will be carrying the S1 Integrated Truss Structure, the first starboard truss segment. The S1 will be attached to the central truss segment, S0, during the 11-day mission. Wolf will be undertaking three EVAs scheduled during the mission. STS-112 is his third Shuttle flight.