Standard-SM2ER Block 4 [USNavy]
The Standard-ER anti aircraft missile has been reconfigured with a new Mk.72 booster as the Standard-SM2ER Block 4 to allow it to be launched from the vertical launch system (VLS) on Ticonderoga class cruisers and Arleigh Burke class destroyers.
Based on the Standard-SM2ER Block 4 a three stage Standard-SM3 was developed for defense against ballistic missiles. The ASAS stage was added as a third stage and the LEAP exo-atmospheric kill vehicle functions as a kinetic warhead. After a number of successful tests against target vehicles and mock-up warheads, the Pentagon decided in February 2008 to use SM-3 missiles to destroy the defunct NROL 21 spy sat.
|Vehicle||Stage 1||Stage 2||Stage 3|
|Standard-SM2ER Block 4||Mk.72||Standard Mk.104||-|
|Standard-SM3||Mk.72||Standard Mk.104||ASAS Mk.136|