JoongAng Ilbo has found out that the recent equipment upgrades at the THAAD site in Seongju, South Korea was to allow its AN/TPY-2 radar to guide PAC-3 interceptors launched remotely.
The South Korean government had said the upgrading exercise was merely to replace old THAAD missiles with new ones.
With the upgrade, 100 Patriot launchers in South Korea can be directed by the THAAD’s radar.
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