Raytheon to produce two Fire Control System MK 99 in support of AEGIS of DDG-51 destroyers.

According to a contract released by the U.S. Department of Defense (DoD) on December 9, 2020, Raytheon Missiles and Defense, Marlborough, Massachusetts, is awarded a $38,786,218 firm-fixed-price and cost-plus-fixed-fee modification to a previously awarded contract for the production of two Fire Control System MK 99 ship sets and the associated technical engineering services in support of the Aegis Combat System on DDG-51 class ships of U.S. Navy.
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The Arleigh Burke-class guided-missile destroyer USS Arleigh Burke (DDG 51) transits the Mediterranean Sea, Oct. 23, 2018. Ross, forward-deployed to Rota, Spain, is on its seventh patrol in the U.S. 6th Fleet area of operations in support of U.S. national security interests Europe and Africa. (Picture source U.S. Navy)

The DDG 51 is the Arleigh Burke-class destroyers in service with the U.S. Navy. They are multi-mission warships with offensive and defensive capability in multi-threat air, surface, and subsurface environments. The USS Arleigh Burke (DDG 51), the first ship and namesake of the class, was commissioned on July 4, 1991. Since then 62 more ships have been commissioned.

The most recently commissioned ships are Flight IIA variants. There are four Flights, or variants, of the DDG in service today - Flight I, Flight II, and Flight IIA. Each Flight represents an evolutionary upgrade to the capability of the ship. Twelve flight III variants are already ordered by the U.S. Navy.

The MK-99 Fire Control System (FCS) is a major component of the AEGIS Combat System, a centralized, automated, command-and-control and weapons control system that was designed as a total weapon system, from detection to kill. It controls the loading and arming of the selected weapon, launches the weapon, and provides terminal guidance for AAW missiles. FCS controls the continuous wave illuminating radar, providing a very high probability of kill.

The Mk-99 Fire Control System (FCS) also controls the target illumination for the terminal guidance of Ship Launched SM-2 Anti-Air Missiles. It communicates with the ship's missile control station, notifying it of the threat and identifying the target to be destroyed.