<page_title> RIM-67 Standard </page_title> <section_title> Surface to air variants </section_title> <table> <cell> RIM-156A (ex-RIM-67E) <col_header> Designation </col_header> </cell> <cell> SM-2ER Block IV <col_header> Block </col_header> </cell> <cell> Designed for Aegis VLS ships. Initial Operational Capability was declared in August 1999. <col_header> Notes </col_header> </cell> </table>
The RIM-156A Standard SM-2ER Block IV was developed for the Aegis cruisers.