United Space Alliance (USA)

As the prime contractor for NASA's Space Shuttle Program, United Space Alliance (USA) is responsible for the day-to-day operation and management of the U.S. Space Shuttle fleet. USA is chartered to manage and conduct space operations work involving the operation and maintenance of multi-purpose space systems, including systems associated with NASA's Human Space Flight Program, Space Shuttle applications beyond those of NASA and other reusable launch and orbital systems beyond the Space Shuttle and Space Station.

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