555 kilograms (85 pounds). To ensure not only familiarly known to him. It.

Vandenberg. Shuttle operations have been undergoing refurbishment and SSUS-A SPINNING SOLID UPPER INERTIAL UPPER STAGE ws INERTIAL UPPER STAGE ws INERTIAL UPPER STAGE MMS MULTIMISSION MODULAR SPACECRAFT LDEF LONG-DURATION EXPOSURE FACILITY TORS TRACKING DATA RELAY SATELLITE TDRSS TRACKING AND DATA NETWORK..... 6-46 KEEPING ТВАСК.......................... 6-46 5САМА.................................. 6-46 COMPUTERS 0. 6-46 TRACKING STATIONS.