THAAD

The Terminal High Altitude Area Defense — a wheeled, hit-to-kill interceptor system that destroys short- and medium-range ballistic missiles in their terminal phase, both inside and just above the atmosphere, and the only dedicated upper-tier BMD layer to have seen combat.

Overview

THAAD is a mobile terminal-phase ballistic missile defense system fielded by the United States and sold to the UAE and Saudi Arabia. A battery combines a long-range X-band radar, six to eight truck-mounted launchers, and a pair of fire-control and communication nodes into a single road-mobile unit designed to intercept short-, medium-, and limited intermediate-range ballistic missiles at altitudes between the low endo-atmospheric and exo-atmospheric regimes. Unlike the Patriot and S-400 families, THAAD engages no aerodynamic targets—it is purpose-built for the ballistic-missile kill chain.

Development

Lockheed Martin developed the THAAD interceptor and system integration, while Raytheon/RTX supplied the AN/TPY-2 radar. The program passed its first successful hit-to-kill intercept in 1999 and was formally fielded in 2008, with the first operational battery activated that year. Production continues, and the U.S. Army fields at least seven batteries, each comprising about 95 soldiers, six launchers, 48 ready interceptors, one AN/TPY-2 radar, and two tactical operations centers, according to a Congressional Research Service overview and the service’s own order-of-battle data. CRS Wikipedia

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