RIM-156 Standard SM-2
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A member of the Standard SM missile series, the RIM-156 Standard, also known as the SM-2ER Block IV, is q long-range naval surface-to-air missile designed to be fired from Vertical Launch Systems on ships equipped with the AEGIS battle management system. Its launch is controlled by the Mark 99 fire control system, its initial and midcourse guidance comes from from a AN/SPY-1 or higher AEGIS search radar, and it uses terminal semi-active radar homing from an AN/SPG-62 illumination radar.