the maintenance of the cargo launch vehicles (HLLV) and the personnel launch vehicle (PLV). This element will also manage and conduct the training and simulation for all transportation vehicle flight crews. 3. LEO Operational Base Control The LEO and GEO operational bases utilize the same basic elements for operations and control authority, with the major differences being due to the nature of the functions and tasks required in their respective orbital location for manufacturing and construction operations, logistics operations, and base support operations. Each space operational base (LEO or GEO) is envisioned to manage its own day-to-day activities involved with manufacturing, construction, logistics, and transportation operations and its interfaces with the other major elements in the SPS system. It is expected that the LEO operational base will be predominantly concerned with logistics and transportation operations because its position in LEO links it directly to the ground and to the GEO operational base. This base will be the primary "space traffic control center" handling all cargo and personnel arriving and departing via the launch vehicles from Earth and then, in turn, acting as a warehouse in space until transferring required cargo and personnel to orbital transfer vehicles (OTV) for departure to the GEO operational base and handling arriving OTV's returning from GEO. It is therefore expected that significant authority for operations and control over all the SPS logistics and transportation operations will be delegated to the LEO operational base. Because of its ongoing full range of space operation activities and its ready access to the ground, the LEO operational base is the prime candidate for implementing and conducting training and simulation for all new orbital crew personnel. 4. GEO Operational Base Control The GEO operational base, similar to the LEO operational base, will manage its own day-to-day activities involved with manufacturing, construction, logistics and transportation operations, and its interface with the other major elements in the SPS system. It is expected that the GEO operational base will be predominantly concerned with the manufacturing, construction, and final checkout and operational go-ahead for each SPS satellite because its position in GEO is the resident operational location for the SPS satellites. Therefore, it is expected that significant authority for operations and control over all the SPS manufacturing, construction, checkout, and maintenance will be delegated to the GEO operational base.
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