The Standard Missile-2 (SM-2) is a ship-launched, medium-to-long-range surface-to-air missile. It’s the U.S. Navy’s primary surface-to-air air defense weapon. The SM-2 is part of the Standard missiles family, which also includes the Standard Missile-6 (SM-6). The SM-2 is launched from the Mark 41 vertical launcher system (VLS). It’s an integral part of the AEGIS Weapon System (AWS) aboard Ticonderoga-class cruisers and Arleigh Burke-class destroyers. The SM-2 provides anti-air warfare and limited anti-surface warfare capability against today’s advanced anti-ship missiles and aircraft. It’s primarily used for fleet area air defense and ship self defense, but it also has an extended air defense capability and it has a secondary anti-surface ship mission.