and the RIM-156 Standard Extended Range Block IV (SM-2ER Block IV) terminal-phase interceptors developed by Raytheon. The Standard Missile 3 is a development of the SM2-ER Block IV, capable of intercepting ballistic missiles above the atmosphere (i.e., exo-atmospheric intercept) during the midcourse phase of a hostile ballistic missile's flight. The missile is launched from the Mk 41 Vertical Launching System (VLS) of the warships. It receives in-flight target updates from the ship. The kinetic warhead (KW) is designed to destroy a ballistic missile's warhead with more than 130 megajoules of kinetic energy by colliding with it. The existing SM-3 Block IA version will be upgraded to SM-3 Block IB, SM-3 Block IIA and SM-3 Block IIB to counter future ballistic missile threats. The SM-2ER Block IV can engage the ballistic missiles within the atmosphere (i.e., endoatmospheric intercept) in the terminal phase of a missile's trajectory. The missile carries a blast fragmentation warhead. The SM-2ER Block IV was further developed in a new extended range active missile, RIM-174 Standard ERAM (Standard Missile 6), which adds an active radar homing seeker. SM-6 is a dual-capability missile that can be used for either air defense (i.e., countering aircraft and anti-ship cruise missiles) or terminal ballistic missile defense; it is not meant to replace the SM-2 series of missiles, but will serve alongside and provide extended range and increased firepower. In January 2018 the Navy approved plans to develop a Dual Thrust Rocket Motor for the SM-6, with a larger 21-inch diameter to replace the current 13.5-inch propulsion package. The new rocket motor would sit atop the current 21-inch booster, producing a new variant of the missile: the SM-6 Block IB. In March 2018 the MDA announced it “is evaluating the technical feasibility of the capability of the SM-3 Block IIA missile, currently under development, against an ICBM-class target. If proven to be effective against an ICBM, this missile could add a layer of protection, augmenting the currently deployed GMD system.” The MDA plans to conduct a demonstration of the SM-3 Block IIA against an ICBM-like target by the end of 2020. On November 17, 2020 an SM-3 Block IIA missile successfully intercepted a threat-representative Intercontinental Ballistic Missile (ICBM) target in its mid-course phase of flight, reaffirming the capability to intercept non-separating, simple separating, and complex-separating ballistic missiles. Glide Phase Interceptor (GPI) will provide defense against hypersonic weapons. Glide Phase Interceptor will be integrated