NASA has exercised a contract option with Lockheed Martin Corp. of Gaithersburg, Md., to provide continued mission control systems services, development, maintenance and operations support as part of the Facilities Development and Operations Contract. The extension has a total estimated value of $166.8 million and extends the period of performance through Sept. 30, 2014. The total contract value has been increased to $1 billion. Lockheed Martin will provide support for the hardware, software, data and displays systems used to train for and execute all human spaceflight missions supported by the Mission Operations Directorate at NASA's Johnson Space Center in Houston. The contract provides systems services support within the Christopher C. Kraft Jr. Mission Control Center and the Jake Garn Mission Simulator and Training Facility at Johnson, and at various backup control centers.