The "Standard Missile" is a type of surface-to-air missile (SAM) originally developed for the United States Navy.
Some references claim a limited surface-to-surface capability.
General Characteristics
General Characteristics
SM-2 Block III/IIIA/IIIB Medium Range
SM-2 Block IV Extended Range
Copied above information from: [1], see also [1] for an overview of the SM-family.