Military & Aerospace Electronics:

Shipboard electronics experts at the Raytheon Co. are building additional MK 99 fire-control systems for the Aegis weapon systems on future Flight III Arleigh Burke-class guided-missile destroyers under terms of a $123.5 million order announced Friday.

Officials of the Naval Sea Systems Command in Washington are asking the Raytheon Integrated Defense Systems segment in Marlborough, Mass., for fiscal 2020 options on MK 99 Aegis fire-control systems equipment.

The MK 99 fire-control system functions as the interface between the Aegis AN/SPY-1 radar and the ship-launched SM-2 family of anti-air missiles. The MK 99 fire-control system communicates with the missile-control station, notifying it of the air threat, and then illuminates the missile’s target.

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