HUNTSVILLE, Ala. — NASA has awarded Excalibur Associates Inc. of Alexandria, Va., a contract to provide protective services at the Marshall Space Flight Center in Huntsville, Ala., and the Michoud Assembly Facility in New Orleans, La.

The firm-fixed-price contract begins January 1, 2012, with a nine-month base period, followed by four one-year options and a one three-month option which may be exercised at NASA’s discretion. The performance period, including all options, has a total mission services price of $43.1 million and an additional maximum indefinite-delivery, indefinite-quantity value.

Under the contract, Excalibur will be responsible for providing support for physical and personnel security, technology protection and emergency management and training.

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