ISS005-E-09221 (7 August 2002) --- Cosmonaut Sergei Y. Treschev (left) and astronaut Peggy A. Whitson, both Expedition Five flight engineers, perform maintenance on the Treadmill Vibration Isolation System (TVIS) in the Zvezda Service Module on the International Space Station (ISS). Treschev represents Rosaviakosmos.