The Missile Defense Agency gave The Boeing Co. [BA] a $250 million contract for continued work on the Ground-based Midcourse Defense (GMD) system, the company announced.

That one-year pact covers GMD maintenance and operations support, ensuring the United States’ only defense against long-range ballistic missiles remains ready for operational service.

The contract includes an option for 2010 and covers operator and maintainer training, supply chain services, on-site engineering support and technical data development.

GMD, an integral element of the global ballistic missile defense system, consists of interceptors in underground silos, radars, command and control facilities, communications terminals and a 20,000-mile, fiber-optic communications network.

The program has more than 400 partners and suppliers with operations in 36 states and operational sites in Alaska, California and Colorado, as well as the Sea-Based X-Band (SBX) radar system.

MDA recently announced it will solicit competitive bids for future GMD operations and sustainment support no later than 2011. As an industry leader in performance-based logistics, Boeing stated it is well positioned to compete for and win additional GMD support contracts.