United Space Alliance
United Space Alliance (USA) is a joint venture between Boeing and Lockheed Martin, with headquarters in Houston, to conduct the Space Flight Operations Contract and Space Program Operations Contract for NASA.
United Space Alliance was formed in 1995 as a limited liability company as a joint venture between Rockwell International and Lockheed Martin in response to NASA's desire to consolidate many Space Shuttle program contracts to one prime contractor. USA signed the Space Flight Operations Contract with NASA in September 1996 to become the single prime contractor that NASA was seeking. USA supported the contract for 10 year through September 2006, and then with NASA agreed the Space Program Operations Contract (SPOC).
USA's major activities are the operation and processing of the Space Shuttle Fleet (now concluded) and the International Space Station (ISS), as defined by SPOC.